Document and Entity Information - shares	6 Months Ended
	Jul. 03, 2022	Aug. 12, 2022
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jul. 03, 2022
Entity File Number	001-41059
Entity Registrant Name	Lulu’s Fashion Lounge Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8442468
Entity Address, Address Line One	195 Humboldt Avenue
Entity Address, City or Town	Chico
Entity Address State Or Province	CA
Entity Address, Postal Zip Code	95928
City Area Code	530
Local Phone Number	343-3545
Title of 12(b) Security	Common stock, $0.001 par value per share
Trading Symbol	LVLU
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		38,931,050
Entity Central Index Key	0001780201
Current Fiscal Year End Date	--01-02
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Amendment Flag	false