Reformation has swiftly gained a loyal following for its sustainable practices and pretty designs. Case in point: these Maya blue cotton-blend Serena skinny-fit jeans. Featuring a high rise, a waistband with belt loops, a button & zip fastening, a five pocket design and a cropped length. POSITIVELY CONSCIOUS: Reformation scores 4 out 5 by independent ethical brand rating agency Good On You. It uses eco-friendly materials in its products, renewable energy for its supply chain, and reuses all its textile offcuts. It traces most of its supply chain to ensure good labour standards and visits suppliers regularly.