As a multi-brand retailer, Steven Alan was the first US stockist of Acne Studios, Maison Kitsuné, Engineered Garments and Mansur Gavriel. By 1999 he had launched his own line of ready-to-wear standards — the now-signature Reverse Seam button-down, chinos and easy cotton dresses in plaids, stripes and chambray. Women's Wear Daily called him "a household name for hip consumers," Mary-Kate Olsen and Natalie Portman among them.
The brand grew to multiple New York locations and shops in California, designed collections for Uniqlo, Keds and Dockers, and in 2011 sold a minority stake to Shinola founder Tom Kartsotis's Bedrock Manufacturing before splitting from it in 2016. After paring back to its online presence, Steven Alan opened a new Chelsea store on West 20th Street in 2024.