Tony Bennett’s nude sketch of Lady Gaga to be put up for auction

Crooner's naked portrait of pop star to be put on eBay…

Tony Bennett‘s nude sketch of Lady Gaga is to be auctioned online for charity.

Rolling Stone reports that the legendary crooner’s naked drawing of the ‘Bad Romance’ star will be sold to the highest bidder on eBay Charity, with the proceeds being used to benefit Gaga’s Born This Way Foundation and Bennett’s own philanthropic body Exploring The Arts.

Bennett drew the portrait when he and Gaga teamed up for a photo shoot for Vanity Fair magazine earlier this year. The pair collaborated on the track ‘The Lady Is A Tramp’ for the 85-year-old’s album ‘Duets II’, which was released in September this year.

Speaking about the picture, Gaga explained how photographer Annie Leibovitz persuaded her to shed her clothes. “I was in Tony’s studio and I walked in and she was like: ‘I want you to be naked,'” she said. “So I took off my robe and lay down and poor Tony was standing there looking at me like: ‘Oh this fucking girl.'”

Last week, Lady Gaga revealed that she was scared of dying like Princess Diana and had written a song inspired by the late royal icon.

The singer has also said she has chosen a name for a new album and has already started working on the LP, despite only releasing her last album ‘Born This Way’ in May this year.