All of Keira Knightley's outfits in Atonement (2007) S the iconic green dress, created by costume designer Jacqueline Durran worn by Keira Knightley as Cecilia Tallis in Atonement (2007) Instagram The green dress which Keira Knightley wore in Atonement (2007) has been named "the best of all time" by InStyle Magazine, exceeding some classics as Audrey Hepburn's little black dress in Breakfast PART 1: The Green Atonement Dress #keiraknightley #atonement #fashioninfilm #costume #costumedesign #filmandtv #fashion #jacquelinedurran The green dress Kiera Knightley wore in Atonement is my Roman Empire., My life and the lives of countless millennial girls changed when I watched Atonement and saw THE Green Dress for the first time. Atonement: Keira Knightley's Green Dress Clothes on film