Keira Knightley's infamous emerald green dress in Atonement (2007) was carefully designed to embody the characters personality. It symbolises temptation which is a major theme throughout the film, especially during the events When we started making the movie, we all knew it was a pivotal moment and it had to be a memorable dress. To make a dress that bold everyone has to be 38 Atonement ~ That Green Gown ideas atonement, keira knightley, atonement dress 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: