Forget the little black dress. Replace your LBD with this Gavin short-sleeve midi dress from Reformation on your next night out. Cheers! Featuring a round neck, short sleeves, a fitted waist, a side slit and a mid-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.