Lets hear it for THE green dress #vintage #vintagefashion #1930s #1930sfashion #costume #costumedesign #atonementdress #keiraknightley #greenscreen #100fashionfilms #100fashionfilmsproject Atonement dress green wedding dress Long maxi dress with open back Backless, Cecilia in Atonement, green dress Keira Knightley The emerald green silk dress Keira Knightley wears in Atonement became a cinematic legend not just for its beauty but for the intention behind it. Costume designer Jacqueline Durran created it to feel Keira Knightley Green Vintage Evening Dress in Movie Atonement Kiera Knightley's iconic emerald gown from 'Atonement' remains one of cinema's best fashion moments. Here, see where it ranks on our roundup of the most stunning period costumes ever seen on film: