Los Angeles: Pop star Lady Gaga's nude sketch made by Tony Bennett went under the hammer online and fetched USD 30,000.
The sketch was done as part of a cover story and layout of Vanity Fair's January issue. Signed as Bennett's real last name 'Benedetto', the piece depicts Gaga's pose when she did a photo shoot with famed photographer Annie Leibovitz, as reported.
"I walked in and said, 'Well, Tony, here we are,' and I dropped my robe and I got into position. I felt shy and thought, 'It's Tony Bennett. Why am I naked?," Gaga said in a TV interview.
The charcoal-on-paper artwork was one of the items related to Gaga that were sold on eBay charity auction.    

Other items put up for auction was an autographed poster of the Vanity Fair cover featuring Gaga and some of the accessories she wore during the shoot.
Bennett's organization Exploring the Arts and Gaga's Born This Way Foundation would benefit from the auction.