The Story Behind Keira Knightley's Emerald Green Slip Dress From 'Atonement' Vogue Another part of why I think this green dress resonates so much is that it's a real collaboration. The thing is, to make a dress @edithhead on Tumblr Heres how I made the green Atonement dress for @gremlita !! , This was truly one of the most special projects Ive ever taken on for such a joyful occasion. I learned so much along the way and I Atonement Cecilia Green Long Dress Backless Maxi Dress Keira Knightley Prom Dres eBay