The Story Behind Keira Knightley's Emerald Green Slip Dress From 'Atonement' Vogue 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 Obsession in Green The Atonement Dress Closet Core Patterns Keira Green Dress The green dress which Keira Knightley wore in Atonement (2007) has been named "the best of all time" by InStyle Magazine, exceeding some classics as Audrey Hepburn's little black dress in Breakfast Keira Green Dress