This is Lady Gaga as sketched by Tony Bennett, who apparently signs his original artwork with his real last name “Benedetto” because all Italians have secret mob names. It’s currently up for auction to benefit GaGa and Tony’s charities, according to HuffPost Culture:

Talking during her Thanksgiving TV special, Gaga described the incident: “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?”
…
We asked Nick Fox, Fine Art Lecturer at Newcastle University & John Moore’s contemporary painting prizewinner 2010, what he made of it.
“While Tony Bennett is an amazing singer it is possible he might benefit from some observational drawing tuition,” said Fox.
“On a brighter note it is clearly full of passion for the subject – there’s a certain passion and sensitivity to her feminine charms. Yes, it is worth the asking price – it’s Tony Bennett! It’s about collectability at the end of the day.”

Not only did he completely forget to draw her schnoz, but he made her tit look like a dolphin penis and sketched the smoke monster floating out of her crotch. Makes sense.