Shein is a global online fast-fashion retailer founded in China in 2008. The company specializes in affordable, trend-focused clothing, accessories, and home goods, primarily sold through its mobile app and website. Shein operates on a direct-to-consumer model, leveraging data-driven design and rapid supply chain processes to quickly bring new styles to market. It has grown into one of the world's largest e-commerce fashion brands, with a significant presence in the U.S., Europe, and other international markets.