Keira Knightley cuts an elegant figure in a strapless dress while Shanina Shaik flashes her sideboob in a racy ensemble at as they lead the stars at Tod's Milan Fashion Week show 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 Atonement Cecilia Green Long Dress Backless Maxi Dress Keira Knightley Prom Dres eBay Keira Knightley stuns in a backless gown as she and joins glam Hannah Waddingham on set of Netflix's The Woman in Cabin 10 at Spencer Mathews' family estate in Scotland Daily Atonement Cecilia Green Long Dress Backless Maxi Dress Keira Knightley Prom Dres eBay A dress so iconic the original went missing! Keira Knightley's emerald silk gown in Atonement wasn't just the green dress it was the moment. Custom dyed, cut on the bias, and