38 Atonement ~ That Green Gown ideas atonement, keira knightley, atonement dress 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 Atonement dress, Keira Knightley, Green Dress UK Velvet Birdcage The story behind Keira Knightley's green dress in Atonement Feedc All of Keira Knightley's outfits in Atonement (2007)