Anyone else still thinking about Keira Knightley's backless green dress from Atonement, 13 years later? At the link in bio, our style editor examines why the backless trend became an unlikely Vestido Verde Pelicula Expiacion Green Dress Keira Knightley Atonement Dress Expiacion Vestido Obsession in Green The Atonement Dress Closet Core Patterns The Story Behind Keira Knightley's Emerald Green Slip Dress From 'Atonement' Vogue Keira Knightley's stunning blue dress from Atonement, considered the most beautiful of all time, is making a comeback. The Story Behind Keira Knightley's Emerald Green Slip Dress From 'Atonement' British Vogue