UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number: 811-21081

ALLIANCEBERNSTEIN BLENDED STYLE SERIES, INC.

(Exact name of registrant as specified in charter)

1345 Avenue of the Americas, New York, New York 10105

(Address of principal executive offices) (Zip code)

Joseph J. Mantineo

AllianceBernstein L.P.

1345 Avenue of the Americas

New York, New York 10105

(Name and address of agent for service)

Registrant’s telephone number, including area code: (800) 221-5672

Date of fiscal year end: August 31, 2011

Date of reporting period: May 31, 2011

ITEM 1. SCHEDULE OF INVESTMENTS.

AllianceBernstein Blended Style-U.S. Large Cap Portfolio

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.4%
The AllianceBernstein Pooling Portfolios - Equity - 100.4%
U.S. Large Cap Growth Portfolio		1,703,576	$	20,221,446
U.S. Value Portfolio		2,200,134		20,197,232
				40,418,678
Total Investments - 100.4% (cost $32,741,431) (a)				40,418,678
Other assets less liabilities - (0.4)%				(176,246	)
Net Assets - 100.0%			$	40,242,432

(a) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $7,677,247 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $7,677,247.

AllianceBernstein Blended Style-U.S. Large Cap Portfolio

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Fund would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Fund. Unobservable inputs reflect the Fund’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Fund’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Fund’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	40,418,678	$	—	$	—	$	40,418,678

AllianceBernstein Retirement Strategies

2000 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.6%
The AllianceBernstein Pooling Portfolios - Fixed Income - 73.8%
Bond Inflation Protection Portfolio (a)		415,602	$	4,663,059
High-Yield Portfolio		56,148		581,694
Intermediate Duration Bond Portfolio		585,576		6,289,086
Short Duration Bond Portfolio		658,081		6,317,574
Volatility Management Portfolio (a)		460,102		5,171,549
				23,022,962
The AllianceBernstein Pooling Portfolios - Equity - 26.8%
International Growth Portfolio (a)		96,737		904,494
International Value Portfolio		108,663		902,991
Multi-Asset Real Return Portfolio (a)		227,446		2,224,419
Small-Mid Cap Growth Portfolio		19,686		361,832
Small-Mid Cap Value Portfolio		29,276		360,089
U.S. Large Cap Growth Portfolio		152,609		1,811,467
U.S. Value Portfolio		195,630		1,795,880
				8,361,172
Total Investments - 100.6% (cost $26,793,781) (b)				31,384,134
Other assets less liabilities - (0.6)%				(174,875	)
Net Assets - 100.0%			$	31,209,259

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $4,590,353 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $4,590,353.

AllianceBernstein 2000 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	31,384,134	$	—	$	—	$	31,384,134

AllianceBernstein Retirement Strategies

2005 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.2%
The AllianceBernstein Pooling Portfolios - Fixed Income - 66.8%
Bond Inflation Protection Portfolio (a)		477,727	$	5,360,092
High-Yield Portfolio		151,344		1,567,929
Intermediate Duration Bond Portfolio		560,385		6,018,537
Short Duration Bond Portfolio		418,236		4,015,062
Volatility Management Portfolio (a)		624,513		7,019,529
				23,981,149
The AllianceBernstein Pooling Portfolios - Equity - 33.4%
International Growth Portfolio (a)		146,356		1,368,425
International Value Portfolio		164,011		1,362,934
Multi-Asset Real Return Portfolio (a)		300,558		2,939,457
Small-Mid Cap Growth Portfolio		32,119		590,350
Small-Mid Cap Value Portfolio		48,123		591,905
U.S. Large Cap Growth Portfolio		217,373		2,580,220
U.S. Value Portfolio		280,720		2,577,013
				12,010,304
Total Investments - 100.2% (cost $29,384,031) (b)				35,991,453
Other assets less liabilities - (0.2)%				(85,742	)
Net Assets - 100.0%			$	35,905,711

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $6,607,422 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $6,607,422.

AllianceBernstein 2005 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	35,991,453	$	—	$	—	$	35,991,453

AllianceBernstein Retirement Strategies

2010 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.1%
The AllianceBernstein Pooling Portfolios - Fixed Income - 57.8%
Bond Inflation Protection Portfolio (a)		2,088,015	$	23,427,534
High-Yield Portfolio		1,049,034		10,867,991
Intermediate Duration Bond Portfolio		2,212,518		23,762,440
Short Duration Bond Portfolio		338,460		3,249,217
Volatility Management Portfolio (a)		2,965,102		33,327,749
				94,634,931
The AllianceBernstein Pooling Portfolios - Equity - 42.3%
International Growth Portfolio (a)		917,930		8,582,646
International Value Portfolio		1,027,178		8,535,848
Multi-Asset Real Return Portfolio (a)		1,303,423		12,747,479
Small-Mid Cap Growth Portfolio		211,671		3,890,516
Small-Mid Cap Value Portfolio		315,177		3,876,679
U.S. Large Cap Growth Portfolio		1,332,677		15,818,871
U.S. Value Portfolio		1,718,513		15,775,946
				69,227,985
Total Investments - 100.1% (cost $134,959,370) (b)				163,862,916
Other assets less liabilities - (0.1)%				(242,259	)
Net Assets - 100.0%			$	163,620,657

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $28,903,546 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $28,903,546.

AllianceBernstein 2010 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	163,862,916	$	—	$	—	$	163,862,916

AllianceBernstein Retirement Strategies

2015 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.2%
The AllianceBernstein Pooling Portfolios - Fixed Income - 50.5%
Bond Inflation Protection Portfolio (a)		3,056,741	$	34,296,634
High-Yield Portfolio		2,288,343		23,707,230
Intermediate Duration Bond Portfolio		3,869,615		41,559,670
Volatility Management Portfolio (a)		5,931,518		66,670,264
				166,233,798
The AllianceBernstein Pooling Portfolios - Equity - 49.7%
International Growth Portfolio (a)		2,234,853		20,895,879
International Value Portfolio		2,466,141		20,493,631
Multi-Asset Real Return Portfolio (a)		2,675,800		26,169,327
Small-Mid Cap Growth Portfolio		579,122		10,644,259
Small-Mid Cap Value Portfolio		858,768		10,562,852
U.S. Large Cap Growth Portfolio		3,160,219		37,511,795
U.S. Value Portfolio		4,053,245		37,208,786
				163,486,529
Total Investments - 100.2% (cost $273,938,775) (b)				329,720,327
Other assets less liabilities - (0.2)%				(793,365	)
Net Assets - 100.0%			$	328,926,962

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $55,781,552 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $55,781,552.

AllianceBernstein 2015 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	329,720,327	$	—	$	—	$	329,720,327

AllianceBernstein Retirement Strategies

2020 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.3%
The AllianceBernstein Pooling Portfolios - Equity - 57.2%
International Growth Portfolio (a)		3,377,950	$	31,583,833
International Value Portfolio		3,783,099		31,437,551
Multi-Asset Real Return Portfolio (a)		3,738,892		36,566,358
Small-Mid Cap Growth Portfolio		948,988		17,442,397
Small-Mid Cap Value Portfolio		1,421,887		17,489,208
U.S. Large Cap Growth Portfolio		4,769,354		56,612,231
U.S. Value Portfolio		6,137,681		56,343,916
				247,475,494
The AllianceBernstein Pooling Portfolios - Fixed Income - 43.1%
Bond Inflation Protection Portfolio (a)		2,018,513		22,647,717
High-Yield Portfolio		2,954,325		30,606,807
Intermediate Duration Bond Portfolio		4,240,353		45,541,391
Volatility Management Portfolio (a)		7,814,199		87,831,601
				186,627,516
Total Investments - 100.3% (cost $365,559,022) (b)				434,103,010
Other assets less liabilities - (0.3)%				(1,402,554	)
Net Assets - 100.0%			$	432,700,456

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $68,543,988 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $68,543,988.

AllianceBernstein 2020 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	434,103,010	$	—	$	—	$	434,103,010

AllianceBernstein Retirement Strategies

2025 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.3%
The AllianceBernstein Pooling Portfolios - Equity - 66.2%
International Growth Portfolio (a)		3,359,519	$	31,411,502
International Value Portfolio		3,733,336		31,024,020
Multi-Asset Real Return Portfolio (a)		2,965,476		29,002,359
Small-Mid Cap Growth Portfolio		949,897		17,459,110
Small-Mid Cap Value Portfolio		1,408,709		17,327,123
U.S. Large Cap Growth Portfolio		4,660,398		55,318,924
U.S. Value Portfolio		5,977,468		54,873,157
				236,416,195
The AllianceBernstein Pooling Portfolios - Fixed Income - 34.1%
Bond Inflation Protection Portfolio (a)		280,689		3,149,334
High-Yield Portfolio		2,447,095		25,351,909
Intermediate Duration Bond Portfolio		2,622,681		28,167,589
Volatility Management Portfolio (a)		5,810,580		65,310,916
				121,979,748
Total Investments - 100.3% (cost $301,862,735) (b)				358,395,943
Other assets less liabilities - (0.3)%				(903,463	)
Net Assets - 100.0%			$	357,492,480

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $56,533,208 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $56,533,208.

AllianceBernstein 2025 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	358,395,943	$	—	$	—	$	358,395,943

AllianceBernstein Retirement Strategies

2030 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.6%
The AllianceBernstein Pooling Portfolios - Equity - 75.4%
International Growth Portfolio (a)		3,559,150	$	33,278,053
International Value Portfolio		3,953,888		32,856,804
Multi-Asset Real Return Portfolio (a)		2,077,329		20,316,276
Small-Mid Cap Growth Portfolio		978,535		17,985,478
Small-Mid Cap Value Portfolio		1,451,131		17,848,909
U.S. Large Cap Growth Portfolio		4,834,334		57,383,546
U.S. Value Portfolio		6,203,890		56,951,712
				236,620,778
The AllianceBernstein Pooling Portfolios - Fixed Income - 25.2%
High-Yield Portfolio		1,704,999		17,663,784
Intermediate Duration Bond Portfolio		1,649,237		17,712,808
Volatility Management Portfolio (a)		3,893,697		43,765,157
				79,141,749
Total Investments - 100.6% (cost $262,691,650) (b)				315,762,527
Other assets less liabilities - (0.6)%				(1,867,809	)
Net Assets - 100.0%			$	313,894,718

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $53,070,877 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $53,070,877.

AllianceBernstein 2030 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	315,762,527	$	—	$	—	$	315,762,527

AllianceBernstein Retirement Strategies

2035 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.5%
The AllianceBernstein Pooling Portfolios - Equity - 83.6%
International Growth Portfolio (a)		2,762,602	$	25,830,330
International Value Portfolio		3,098,246		25,746,428
Multi-Asset Real Return Portfolio (a)		1,238,027		12,107,902
Small-Mid Cap Growth Portfolio		776,450		14,271,147
Small-Mid Cap Value Portfolio		1,155,392		14,211,318
U.S. Large Cap Growth Portfolio		3,808,787		45,210,307
U.S. Value Portfolio		4,871,406		44,719,504
				182,096,936
The AllianceBernstein Pooling Portfolios - Fixed Income - 16.9%
High-Yield Portfolio		263,430		2,729,131
Intermediate Duration Bond Portfolio		1,000,791		10,748,496
Volatility Management Portfolio (a)		2,068,483		23,249,752
				36,727,379
Total Investments - 100.5% (cost $183,380,195) (b)				218,824,315
Other assets less liabilities - (0.5)%				(1,021,050	)
Net Assets - 100.0%			$	217,803,265

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $35,444,120 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $35,444,120.

AllianceBernstein 2035 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	218,824,315	$	—	$	—	$	218,824,315

AllianceBernstein Retirement Strategies

2040 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.5%
The AllianceBernstein Pooling Portfolios - Equity - 89.3%
International Growth Portfolio (a)		2,485,963	$	23,243,751
International Value Portfolio		2,795,842		23,233,446
Multi-Asset Real Return Portfolio (a)		943,995		9,232,275
Small-Mid Cap Growth Portfolio		695,544		12,784,096
Small-Mid Cap Value Portfolio		1,029,595		12,664,025
U.S. Large Cap Growth Portfolio		3,457,110		41,035,900
U.S. Value Portfolio		4,443,444		40,790,813
				162,984,306
The AllianceBernstein Pooling Portfolios - Fixed Income - 11.2%
Intermediate Duration Bond Portfolio		841,625		9,039,047
Volatility Management Portfolio (a)		1,017,106		11,432,274
				20,471,321
Total Investments - 100.5% (cost $148,193,424) (b)				183,455,627
Other assets less liabilities - (0.5)%				(968,795	)
Net Assets - 100.0%			$	182,486,832

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $35,262,203 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $35,262,203.

AllianceBernstein 2040 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	183,455,627	$	—	$	—	$	183,455,627

AllianceBernstein Retirement Strategies

2045 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.6%
The AllianceBernstein Pooling Portfolios - Equity - 94.3%
International Growth Portfolio (a)		1,803,926	$	16,866,709
International Value Portfolio		2,026,300		16,838,550
Multi-Asset Real Return Portfolio (a)		653,301		6,389,289
Small-Mid Cap Growth Portfolio		506,294		9,305,677
Small-Mid Cap Value Portfolio		751,313		9,241,151
U.S. Large Cap Growth Portfolio		2,510,791		29,803,090
U.S. Value Portfolio		3,221,452		29,572,930
				118,017,396
The AllianceBernstein Pooling Portfolios - Fixed Income - 6.3%
Intermediate Duration Bond Portfolio		581,837		6,248,926
Volatility Management Portfolio (a)		139,748		1,570,768
				7,819,694
Total Investments - 100.6% (cost $102,255,170) (b)				125,837,090
Other assets less liabilities - (0.6)%				(718,894	)
Net Assets - 100.0%			$	125,118,196

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $23,581,920 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $23,581,920.

AllianceBernstein 2045 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	125,837,090	$	—	$	—	$	125,837,090

AllianceBernstein Retirement Strategies

2050 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 100.3%
The AllianceBernstein Pooling Portfolios - Equity - 95.4%
International Growth Portfolio (a)		339,893	$	3,177,997
International Value Portfolio		382,257		3,176,557
Multi-Asset Real Return Portfolio (a)		120,705		1,180,493
Small-Mid Cap Growth Portfolio		95,184		1,749,485
Small-Mid Cap Value Portfolio		142,384		1,751,315
U.S. Large Cap Growth Portfolio		472,636		5,610,190
U.S. Value Portfolio		610,409		5,603,557
				22,249,594
The AllianceBernstein Pooling Portfolios - Fixed Income - 4.9%
Intermediate Duration Bond Portfolio		107,459		1,154,112
Total Investments - 100.3% (cost $17,975,149) (b)				23,403,706
Other assets less liabilities - (0.3)%				(68,625	)
Net Assets - 100.0%			$	23,335,081

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $5,428,557 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $5,428,557.

AllianceBernstein 2050 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	23,403,706	$	—	$	—	$	23,403,706

AllianceBernstein Retirement Strategies

2055 Retirement Strategy

Portfolio of Investments

May 31, 2011 (unaudited)

Company	Shares		U.S. $ Value
MUTUAL FUNDS - 103.5%
The AllianceBernstein Pooling Portfolios - Equity - 98.4%
International Growth Portfolio (a)		80,833	$	755,792
International Value Portfolio		90,950		755,794
Multi-Asset Real Return Portfolio (a)		28,403		277,779
Small-Mid Cap Growth Portfolio		22,637		416,076
Small-Mid Cap Value Portfolio		33,859		416,465
U.S. Large Cap Growth Portfolio		112,295		1,332,936
U.S. Value Portfolio		144,961		1,330,739
				5,285,581
The AllianceBernstein Pooling Portfolios - Fixed Income - 5.1%
Intermediate Duration Bond Portfolio		25,493		273,797
Total Investments - 103.5% (cost $4,625,976) (b)				5,559,378
Other assets less liabilities - (3.5)%				(188,241	)
Net Assets - 100.0%			$	5,371,137

(a) Non-income producing security.

(b) As of May 31, 2011, the cost basis of investment securities owned was substantially identical for both book and tax purposes. Gross unrealized appreciation of investments was $933,402 and gross unrealized depreciation of investments was $(0), resulting in net unrealized appreciation of $933,402.

AllianceBernstein 2055 Retirement Strategy

May 31, 2011 (unaudited)

In accordance with U.S. GAAP regarding fair value measurements, fair value is defined as the price that the Strategy would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The U.S. GAAP disclosure requirements establish a framework for measuring fair value, and a three-level hierarchy for fair value measurements based upon the transparency of inputs to the valuation of an asset or liability. Inputs may be observable or unobservable and refer broadly to the assumptions that market participants would use in pricing the asset or liability. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Strategy. Unobservable inputs reflect the Strategy’s own assumptions about the assumptions that market participants would use in pricing the asset or liability based on the best information available in the circumstances. Each investment is assigned a level based upon the observability of the inputs which are significant to the overall valuation. The three-tier hierarchy of inputs is summarized below.

• Level 1—quoted prices in active markets for identical investments

• Level 2—other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

• Level 3—significant unobservable inputs (including the Strategy’s own assumptions in determining the fair value of investments)

The following table summarizes the valuation of the Strategy’s investments by the above fair value hierarchy levels as of May 31, 2011:

Investments in Securities	Level 1		Level 2		Level 3		Total
Mutual Funds	$	5,559,378	$	—	$	—	$	5,559,378

ITEM 2. CONTROLS AND PROCEDURES.

(a) The registrant’s principal executive officer and principal financial officer have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended) are effective at the reasonable assurance level based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this document.

(b) There were no changes in the registrant’s internal controls over financial reporting that occurred during the second fiscal quarter of the period that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

ITEM 3. EXHIBITS.

The following exhibits are attached to this Form N-Q:

EXHIBIT NO.	DESCRIPTION OF EXHIBIT
3 (a) (1)	Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
3 (a) (2)	Certification of Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant): AllianceBernstein Blended Style Series, Inc.

By:	/s/    Robert M. Keith
	Robert M. Keith
	President
Date: July 25, 2011

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By:	/s/    Robert M. Keith
	Robert M. Keith
	President
Date:	July 25, 2011
By:	/s/    Joseph J. Mantineo
	Joseph J. Mantineo
	Treasurer and Chief Financial Officer
Date:	July 25, 2011