The Reformation Rosi Midi Dress exudes romantic allure with its sweetheart neckline and back cutout detail, offering a timeless and flirty silhouette for any occasion. The Reformation Rosi Midi Dress exudes romantic allure with its sweetheart neckline and back cutout detail, offering a timeless and flirty silhouette for any occasion. 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.