Atonement' 10th anniversary: The inside story on that iconic green dress 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 Another portrait, and another #green dress that's reminiscent of the famous evening gown worn by Keira Knightley' in the 2007 film Atonement (scroll through for a still from the film in case The Green Dress from Atonement That Changed Film Fashion A dress so iconic the original went missing! Keira Knightley's emerald silk gown in Atonement wasn't just the green dress it was the moment. Custom dyed, cut on the bias, and