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 Alexa Chung Just Re Created Keira Knightley's Iconic Atonement Dress Who What Wear Keira Knightley's green dress from Atonement we still talk about you Atonement Dress Dupe: Vintage Thrift Find Revealed 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