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 Alexa Chung Just Re Created Keira Knightley's Iconic Atonement Dress Who What Wear Making THAT Green Dress From Atonement Keira Knightley in Atonement ZBrushCentral Green Satin Maxi Dress, Open Back, Atonement Inspired Evening Gown Anyone else still thinking about Keira Knightley's backless green dress from Atonement, 13 years later? At the link in bio, our style editor examines why the backless trend became an unlikely