<?xml version="1.0" encoding="UTF-8"?>
<edgarSubmission xmlns="http://www.sec.gov/edgar/nmfp" xmlns:com="http://www.sec.gov/edgar/common" xmlns:invest="http://www.sec.gov/edgar/invest" xmlns:part1="http://www.sec.gov/edgar/nmfpfund" xmlns:part2="http://www.sec.gov/edgar/nmfpsecurities" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nmfp eis_NMFP_Submission.xsd">
  <submissionType>N-MFP</submissionType>
  <liveTestFlag>LIVE</liveTestFlag>


  <isThisElectronicCopyOfPaperFormat>N</isThisElectronicCopyOfPaperFormat>
  <DocumentPeriodEndDate>2011-06-30</DocumentPeriodEndDate>
  <EntityCentralIndexKey>0000874835</EntityCentralIndexKey>

  <seriesId>S000016931</seriesId>
  <totalClassesInSeries>1</totalClassesInSeries>
  <isThisFinalFiling>N</isThisFinalFiling>
  <isFundLiquidating>N</isFundLiquidating>
  <isFundMergingWithOrBeingAcquiredByAnotherFund>N</isFundMergingWithOrBeingAcquiredByAnotherFund>
  <hasFundAcquiredOrMergedWithAnotherFundSinceLastFiling>N</hasFundAcquiredOrMergedWithAnotherFundSinceLastFiling>
  <seriesLevelInformation>
    <part1:ContainedFileInformationFileNumber>033-40603</part1:ContainedFileInformationFileNumber>
    <part1:investmentAdviserList>
      <part1:adviser>
        <part1:adviserName>Legg Mason Partners Fund Advisor LLC</part1:adviserName>
        <part1:adviserFileNumber>801-66785</part1:adviserFileNumber>
      </part1:adviser>
    </part1:investmentAdviserList>
    <part1:subAdviserList>
      <part1:subAdviser>
        <part1:adviserName>Western Asset Management Company</part1:adviserName>
        <part1:adviserFileNumber>801-08162</part1:adviserFileNumber>
      </part1:subAdviser>
    </part1:subAdviserList>
    <part1:independentPublicAccountant>
      <part1:name>KPMG LLP</part1:name>
      <part1:city>New York</part1:city>
      <part1:state>NY</part1:state>
    </part1:independentPublicAccountant>
    <part1:transferAgentList>
      <part1:transferAgent>
        <part1:name>Boston Financial Data Services, Inc.</part1:name>
        <part1:EntityCentralIndexKey>0000275143</part1:EntityCentralIndexKey>
        <part1:fileNumber>84-00896</part1:fileNumber>
      </part1:transferAgent>
    </part1:transferAgentList>
    <part1:isThisFeederFund>N</part1:isThisFeederFund>
    <part1:isThisMasterFund>N</part1:isThisMasterFund>
    <part1:isThisSeriesPrimarilyUsedToFundInsuranceCompanySeperateAccounts>Y</part1:isThisSeriesPrimarilyUsedToFundInsuranceCompanySeperateAccounts>
    <part1:InvestmentTypeDomain>Prime</part1:InvestmentTypeDomain>
    <part1:dollarWeightedAveragePortfolioMaturity>0</part1:dollarWeightedAveragePortfolioMaturity>
    <part1:dollarWeightedAverageLifeMaturity>0</part1:dollarWeightedAverageLifeMaturity>
    <part1:AvailableForSaleSecuritiesAmortizedCost>0.00</part1:AvailableForSaleSecuritiesAmortizedCost>
    <part1:OtherAssets>30222.68</part1:OtherAssets>
    <part1:Liabilities>30222.68</part1:Liabilities>
    <part1:AssetsNet>0.00</part1:AssetsNet>
    <part1:MoneyMarketSevenDayYield>0.0000</part1:MoneyMarketSevenDayYield>
    <part1:seriesShadowPrice>
      <part1:netValuePerShareIncludingCapitalSupportAgreement>0.0000</part1:netValuePerShareIncludingCapitalSupportAgreement>
      <part1:dateCalculatedFornetValuePerShareIncludingCapitalSupportAgreement>2011-06-30</part1:dateCalculatedFornetValuePerShareIncludingCapitalSupportAgreement>
      <part1:netValuePerShareExcludingCapitalSupportAgreement>0.0000</part1:netValuePerShareExcludingCapitalSupportAgreement>
      <part1:dateCalculatedFornetValuePerShareExcludingCapitalSupportAgreement>2011-06-30</part1:dateCalculatedFornetValuePerShareExcludingCapitalSupportAgreement>
    </part1:seriesShadowPrice>
  </seriesLevelInformation>
  <classLevelInformationList>
    <part1:classLevelInformation>
      <part1:classId>C000047112</part1:classId>
      <part1:minInitialInvestment>1.00</part1:minInitialInvestment>
      <part1:netAssetsOfClass>0.00</part1:netAssetsOfClass>
      <part1:netAssetValuePerShare>0.00</part1:netAssetValuePerShare>
      <part1:netShareholderFlowActivityForMonthEnded>-10000000.00</part1:netShareholderFlowActivityForMonthEnded>
      <part1:grossSubscriptionsForMonthEnded>82.20</part1:grossSubscriptionsForMonthEnded>
      <part1:grossRedemptionsForMonthEnded>10000082.20</part1:grossRedemptionsForMonthEnded>
      <part1:sevenDayNetYield>0.0000</part1:sevenDayNetYield>
      <part1:classShadowPrice>
        <part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
          <part1:value>0.0000</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2011-06-30</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareIncludingCapitalSupportAgreement>
        <part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
          <part1:value>0.0000</part1:value>
          <part1:dateAsOfWhichValueWasCalculated>2011-06-30</part1:dateAsOfWhichValueWasCalculated>
        </part1:netAssetValuePerShareExcludingCapitalSupportAgreement>
      </part1:classShadowPrice>
    </part1:classLevelInformation>
  </classLevelInformationList>
  <scheduleOfPortfolioSecuritiesList>
    <part2:scheduleOfPortfolioSecurities>
      <part2:InvestmentIssuer>Cash</part2:InvestmentIssuer>
      <part2:InvestmentTitle>Cash</part2:InvestmentTitle>
      <part2:InvestmentIdentifier>CASH_N4H5</part2:InvestmentIdentifier>
      <part2:InvestmentTypeDomain>Other Instrument</part2:InvestmentTypeDomain>
      <part2:categoryOfInvestmentDesc>Cash</part2:categoryOfInvestmentDesc>
      <part2:isFundTreatingAsAcquisitionUnderlyingSecurities>N</part2:isFundTreatingAsAcquisitionUnderlyingSecurities>
      <part2:rating>Unrated Security</part2:rating>
      <part2:designatedNRSROList>
        <part2:designatedNRSRO>
          <part2:RAN>N/A</part2:RAN>
          <part2:R>N/A</part2:R>
        </part2:designatedNRSRO>
      </part2:designatedNRSROList>
      <part2:InvestmentMaturityDate>2011-06-30</part2:InvestmentMaturityDate>
      <part2:finalLegalInvestmentMaturityDate>2011-06-30</part2:finalLegalInvestmentMaturityDate>
      <part2:doesSecurityHaveDemandFeature>N</part2:doesSecurityHaveDemandFeature>
      <part2:doesSecurityHaveGuarantee>N</part2:doesSecurityHaveGuarantee>
      <part2:doesSecurityHaveEnhancementsOnWhichFundRelying>N</part2:doesSecurityHaveEnhancementsOnWhichFundRelying>
      <part2:InvestmentOwnedBalancePrincipalAmount>0.00</part2:InvestmentOwnedBalancePrincipalAmount>
      <part2:AvailableForSaleSecuritiesAmortizedCost>0.00</part2:AvailableForSaleSecuritiesAmortizedCost>
      <part2:InvestmentOwnedPercentOfNetAssets>0.0000</part2:InvestmentOwnedPercentOfNetAssets>
      <part2:isThisIlliquidSecurity>N</part2:isThisIlliquidSecurity>
      <part2:InvestmentOwnedAtFairValue>0.00</part2:InvestmentOwnedAtFairValue>
      <part2:valueOfSecurityExcludingValueOfCapitalSupportAgreement>0.00</part2:valueOfSecurityExcludingValueOfCapitalSupportAgreement>
    </part2:scheduleOfPortfolioSecurities>
  </scheduleOfPortfolioSecuritiesList>
</edgarSubmission>
