The green silk gown Keira Knightley wore in her Oscar-nominated war-drama Atonement has already garnered much attention with a magazine poll announcing it as the top movie dress of all time. And you too can have a shot at owning the famous garb as celebrity items auctioneers Clothes Off Our Back are putting the dress up for bids with the starting price fixed at $1000. The auction closes on March 1 and all the proceeds of the auction will go to Variety, The Children???s Charity of Southern California. Altruistic urges aside, the gorgeous and sinful indulgence is completely worth owning on its own!