Keira Knightley turned heads in a green tulle Valentino gown last night Keira Knightley at 'The Aftermath' premiere 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 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 AW.Bridal Mermaid Bateau Neckline Floor Length Sleeveless Satin Floral Bridesmaid Dresses Floral Dress Mottled Moss Green Size 4 One Look Costyme Analysis Keira Knightley Atonement Green Dress Jacqueline Durran Tom Lorenzo Site (2) Tom + Lorenzo