The Reformation Collie Sweater is designed for an oversized, relax fit with a classic crew neckline. The Reformation Collie Sweater is designed for an oversized, relax fit with a classic crew neckline. 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.