Trousso is an online marketplace dedicated to facilitating the buying and selling of upscale, once-worn formal wear for women. The platform aims to help users diversify their event wardrobes affordably by offering high-quality, gently used formal attire. Trousso's mission is to make luxury fashion accessible and sustainable by promoting the reuse of elegant garments.

Trousso has successfully created a niche market for pre-owned formal wear, providing a cost-effective and eco-friendly alternative to purchasing new outfits for each event. By enabling users to monetize their once-worn dresses, Trousso contributes to a circular fashion economy and reduces waste.