The Green Dress In Atonement Knightley Green Silk Dress Dress Pattern Atonement Movie Green 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 Keira Knightley green vintage evening dress in Atonement (2008) , The directors orders for the famous green dress included three criteria: lightness, length and shade of green. With the scene set on Keira Knightley wearing a green dress created by costume designer Jacqueline Durran in the 2007 film 'Atonement' : r whatthefrockk