The Leana Dress from Reformation is a romantic midi dress with a rounded neckline, ruched cap sleeves, a back keyhole, and lace detailing at the neck. The Leana Dress from Reformation is a romantic midi dress with a rounded neckline, ruched cap sleeves, a back keyhole, and lace detailing at the neck. 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.