Lady Gaga dropped a bombshell during her ABC Thanksgiving special, "A Very Gaga Thanksgiving."
The 25-year-old pop star, who is known for her eclectic looks and once arrived at the Grammys inside an egg, said on the show that she recently posed nude for singer Tony Bennett so he could sketch her.
The 85-year-old crooner, who is also a painter, called Lady Gaga the "most creative person" he has ever met.
On the special, the two performed the duet "The Lady Is A Tramp," which is featured on Bennett's new "Duets II" album. At least one of his nude pictures of Lady Gaga is set to appear in the January 2012 issue of Vanity Fair magazine, at the suggestion of famed celebrity photographer Annie Leibovitz.
"Annie Leibovitz wanted me to be naked while Tony sketched me," Lady Gaga told ABC news personality Katie Couric on the show. "So, true to form, as me, I'm always giving my all to my work, I walked in and said, 'Well, Tony, here we are' and he started laughing and I dropped my robe and I got into my position. It was very, very nerve-wracking. I felt a little bit ... I felt shy. It's Tony Bennett, why am I naked?'"
A glimpse of one of the pictures was shown on the program and shows Lady Gaga from the side, lying on her stomach and propping herself up by her elbows.
"Annie made me feel okay," she added. "And it's actually great because the first thing that Tony said to me ... was, 'Wait until you see the sketch I did, it's amazing, you look beautiful. Annie loves it. Annie was so happy."
Bennett compared Lady Gaga to Picasso, adding: "She is the most creative person I ever met. There's something very special about her."
"I don't know that I'm the new Picasso but I'm certainly twisted like many of his paintings," Lady Gaga told Couric. "(Bennett is) so handsome. I feel terrible whenever his wife is around because he's so charming and such a gentleman and still, women just fawn all over him. He is the most sweet and wonderful man and soul."
Lady Gaga's Thanksgiving special, which was directed and executive produced by the singer herself, drew a rating of 1.6 among adults aged 18 to 49 and was watched by about 5.5 million people.
During the show, the singer and her dancers performed her songs "Born This Way," "Bad Romance," "You and I" and "The Edge of Glory."
Lady Gaga visited her former elementary school and created art projects with schoolgirls, speaking to them patiently and marveling at their knowledge about late artist Jackson Pollock.
Couric also asked the singer about her love life.
"My love life is the only thing I don't talk about," Lady Gaga said. "The day I get married, no matter how many helicopters are flying over that chapel, they're not getting one picture and I'm not selling one photo."
"I don't know how artists do it," the singer added. "I don't know how artists talk about their marriages or their divorces or their boyfriends. I would never want to reveal anyhting like that. It's sacred in a different way and I'd rather reveal it in a poetic way, with the music."
Lady Gaga was also seen tearing up as she talked about how she helped her father launch a new restaurant in her native New York City.
She also said she would never discuss her private life, adding: "The day I get married, no matter how many helicopters are flying over that chapel, they are not getting one picture."
"I don't know how artists do it," the singer added. "I don't know how artists talk about their marriages or their divorces or their boyfriends. I would never want to reveal anything like that. It's sacred in a different way and I'd rather reveal it in a poetic way, with the music."
Check it out clips from "A Very Gaga Thanksgiving."