Perfect Posey, a mini dress with three-quarter sleeves crowned with subtly puffed shoulders, a V-neckline adorned with embroidery, and a front tie. Perfect Posey, a mini dress with three-quarter sleeves crowned with subtly puffed shoulders, a V-neckline adorned with embroidery, and a front tie. 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.