Lulu's Fashion Lounge Holdings, Inc.

This proxy statement is furnished in connection with the solicitation by the Board of Directors of Lulu’s Fashion Lounge Holdings, Inc. of proxies to be voted at our Annual Meeting of Stockholders to be held on Tuesday, June 9, 2026 (the “Annual Meeting”), at 2:00 p.m. Eastern time, and at any continuation, postponement, or adjournment of the Annual Meeting. The Annual Meeting will be a completely virtual meeting, which will be conducted via live webcast. You will be able to attend the Annual Meeting online and submit your questions during the meeting by visitingwww.virtualshareholdermeeting.com/LVLU2026 and entering your 16-digit control number included in your Notice of Internet Availability of Proxy Materials, on your proxy card or on the instructions that accompanied your proxy materials.

Holders of record of shares of our common stock, $0.001 par value per share, as of the close of business on April 15, 2026 (the “Record Date”), will be entitled to notice of and to vote at the Annual Meeting and any continuation, postponement, or adjournment of the Annual Meeting. As of the Record Date, there were 2,864,405 shares of common stock outstanding and entitled to vote at the Annual Meeting. Each share of common stock is entitled to one vote on any matter presented to stockholders at the Annual Meeting.

This proxy statement and the Company’s Annual Report to Stockholders for the year ended December 28, 2025 (the “2025 Annual Report”) will be released on or about April 23, 2026 to our stockholders on the Record Date.

In this proxy statement, “Lulus,” “Company,” “we,” “us,” and “our” refer to Lulu’s Fashion Lounge Holdings, Inc. Our fiscal year is a “52-53 week” year ending on the Sunday closest in proximity to December 31, such that each quarterly period will be 13 weeks in length, except during a 53-week year when the fourth quarter will be 14 weeks. Unless the context requires otherwise, references herein to, “fiscal 2024” and/or “2024” refer to the fiscal year ended December 29, 2024, and “fiscal 2025” and/or “2025” refer to the fiscal year ended December 28, 2025, and “fiscal 2026” and/or “2026” refer to the fiscal year ending January 3, 2027. Fiscal 2024 and fiscal 2025 consisted of 52 weeks. Fiscal 2026 will consist of 53 weeks.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE STOCKHOLDER MEETING TO BE HELD ON TUESDAY, JUNE 9, 2026

This Notice, Proxy Statement and our 2025 Annual Report to Stockholders are available atwww.proxyvote.com.