Keira Knightley's emerald green dress in Atonement (2007) is one of the most iconic costumes in modern cinema. Designed by Jacqueline Durran, this silk gown became a symbol of elegance, passion, and Keira Knightley wearing a green dress created by costume designer Jacqueline Durran in the 2007 film 'Atonement' : r whatthefrockk The Story Behind Keira Knightley's Emerald Green Slip Dress From 'Atonement' Vogue Atonement dress green wedding dress Long maxi dress with open back Backless, Cecilia in Atonement, green dress Keira Knightley Green Silk Satin Maxi Dress: Open Back Wedding, 'Atonement' Style