Keira Knightley in Atonement. This dress, always, henceforth and forevermore, amen. Pre Sell Keira Knightley as Cecilia Green Dress Atonement LausenCrafts Keira Knightley wearing a green dress created by costume designer Jacqueline Durran in the 2007 film 'Atonement' : r whatthefrockk Keira Knightley's infamous emerald green dress in Atonement (2007) was carefully designed to embody the characters personality. It symbolises temptation which is a major theme throughout the film, especially during the events Why I'm Obsessed with the Green Dress from Atonement itsaLisa Keira Knightleys Atonement dress that everyone wanted wasnt actually a dress