EXHIBIT 99.1 J.JILL, INC. ANNOUNCES SECOND QUARTER 2025 RESULTS Q2 FY25 Net Sales of $154.0 Million Q2 FY25 Gross Margin of 68.4% Provides Q3 FY25 Outlook Quincy, Mass – September 3, 2025 – J.Jill, Inc. (NYSE:JILL) ("J.Jill" or the "Company") today announced financial results for the second quarter of fiscal year 2025. Mary Ellen Coyne, Chief Executive Officer and President of J.Jill, Inc., commented "During the second quarter we saw sequential improvement in sales trends each month as traffic improved and ...