v3.26.1
Document and Entity Information - shares
 6 Months Ended
Jun. 28, 2026
Aug. 07, 2026
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 28, 2026  
Document Transition Report false  
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 495 Ryan Avenue  
Entity Address, Adress Line Two Suite 125  
Entity Address, City or Town Chico  
Entity Address State Or Province CA  
Entity Address, Postal Zip Code 95973  
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 true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   2,871,576
Entity Central Index Key 0001780201  
Current Fiscal Year End Date --01-03  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false