Veteran crooner Tony Bennett was left aghast after walking in on Lady GaGa's naked photoshoot during the recording of their duet.
The pair teamed up to record a version of The Lady Is A Tramp for Bennett's new Duets II album, and during the process Gaga took time out to shoot a Vanity Fair spread at the studio with famed photographer Annie Leibovitz
Leibovitz asked the star to strip off and Bennett was left red-faced when he accidentally walked in on the shoot.
Gaga tells British TV host Jonathan Ross, "I just shot a spread for Vanity Fair in America and Annie Leibovitz shot me and she wanted me to be naked of course... I was in Tony's studio and I walked in and she was like: 'I want you to be naked,' so I took my robe off and lay down and poor Tony was standing there looking at me like: 'Oh this f**king girl'."