**Denim, decoded: We’re digging denim in every corner of our closet.** The Reformation Zeta Top features a sleeveless, peplum silhouette with a zipper front. **Denim, decoded: We’re digging denim in every corner of our closet.** The Reformation Zeta Top features a sleeveless, peplum silhouette with a zipper front. 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.