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 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 Wedtrend Women Sweet Graduation Dress Bowknot Backless Floral Suspender Hollow Homecoming Dress WEDTREND Keira Knightley's iconic green dress @hipphabitat