The 22-year-old actress is giving away the Erdem frock to a CharityBuzz auction benefiting the Robin Hood Foundation's Sandy Relief Fund, which provides long-term support to those affected by the storm, reported Daily Star.
The actress had walked the red carpet for the November premiere of the movie in the Zuhair Murad gown.
Stewart, who also autographed the strapless dress, decided to hand over the garment to charity officials behind the 12-12-12 Auction for Sandy Relief.
The current high bid on her garment, which has an estimated value of USD 7,500 dollars, is 3,750 dollars, but film memorabilia predict that the price may increase.
