Keira Knightley Green Vintage Evening Dress in Movie Atonement Celebrity Dress TheCelebrityDresses Heres how I made the green Atonement dress for @gremlita ! This was truly oje of the most special projects Ive taken on for such a joyful occasion. I learned so much along the way and I am The Story Behind Keira Knightley's Emerald Green Slip Dress From 'Atonement' Vogue She walked into the room, and time held its breath. Keira Knightley's emerald silk in Atonement (2007) wasn't just a costumeit was cinematic seduction. Named the best movie dress of all Keira Knightleys emerald green dress in Atonement (2007) has become one of the most iconic costumes in film history. Designed by Jacqueline Durran, the silk gown perfectly captured 1930s elegance