SOUR is a social media e-commerce app that promotes sustainable fashion by connecting buyers, small businesses, and individual sellers through engaging photos, videos, and personalized recommendations. Sellers can list items with auto-generated descriptions, link posts directly to their listings, and boost visibility with multimedia content. A subscription model offers enhanced exposure and exclusive features for sellers, eliminating sales fees present on competitor apps. At the same time, buyers enjoy a curated, style-focused feed and seamless in-app transactions. SOUR is more than just a marketplace, it fosters a creative community where users share their style, support sustainability, and celebrate second-hand fashion.