At once casual and sexy, the responsibly made Serafina Dress by Reformation is also versatile. Layer on cooler days, or wear alone. 100% non-stretch regeneratively grown cotton, back zipper, and mermaid skirt. At once casual and sexy, the responsibly made Serafina Dress by Reformation is also versatile. Layer on cooler days, or wear alone. 100% non-stretch regeneratively grown cotton, back zipper, and mermaid skirt. 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.