Kiera Knightley's iconic emerald gown from 'Atonement' remains one of cinema's best fashion moments. Here, see where it ranks on our roundup of the most stunning period costumes ever seen on film: Emerald Strapped Gown by Zara Umrigar Rent or Buy Date The Ramp Valerie Emerald Green Juliet Glitter Emerald Green Quince Dress 1443 Emerald Green XSmall Emerald Bridesmaid Dress One Shoulder Dress Chiffon Dress Lulus Zamira Kurung by Nurita Harith, Women's Fashion, Muslimah Fashion, Baju Kurung & sets on Carousell