Taylor Swift's dress to be auctioned

Taylor Swift's 2012 Grammy dress is to go on sale at an auction.

The frock was worn by the I Knew You Were Trouble hitmaker at the 2012 Grammy Awards ceremony where she performed her single Mean.

The mid-length gold piece is up for sale on New York-based online auction site GottaHaveIt.com.

Auctioneer Pete Siegel tells New York Post, "If you were with your girlfriend, sister, brother or mother watching the Grammys last year, you'd remember Taylor Swift's performance."