Keira Knightleys green dress in Atonement , To assemble the wardrobe of the characters, director Joe Wright called on Jacqueline Durran with whom he had worked on the mythical film, Pride and 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 Keira Knightley Style Green Dress Hair Sunday Best: 'Atonement's' gossamer green gown The Seattle Times