The Reformation Tyra Dress is a short-sleeve midi with a flattering V-neckline and a timeless, feminine silhouette. The Reformation Tyra Dress is a short-sleeve midi with a flattering V-neckline and a timeless, feminine silhouette. Founded in 2009, Reformation is a revolutionary lifestyle brand combining stylish, vintage-inspired designs with sustainable practices. With each limited-edition collection, the LA-based brand empowers individuals who want to look beautiful and live sustainably.