The Reformation Delia Dress is a dainty midi with front bow and button detailing, a fitted bodice, and a flowy, relaxed skirt. The Reformation Delia Dress is a dainty midi with front bow and button detailing, a fitted bodice, and a flowy, relaxed skirt. 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.