The stunning frock wore by Keira Knigtley in the Oscar-nominated film Atonement is being auctioned for charity.

The green silk evening gown worn by the British actress as Cecilia Tallis will be sold in an online auction to raise money for Variety – The Children’s Charity of Southern California. The dress was recently voted as the Most Iconic Film Outfit.

The auction opened online at www.clothesoffourback.org on Saturday with a minimum bid of $1,000. The auction will close on March 1.