The pop star, who recently released a CD with the legendary jazz singer, just officially secured him to sing on her big day. "They invited me to do it and, of course, I will," he told The New York Post's Page Six.
He also had great things to say about Taylor. "She's marrying a very wonderful man, very talented and very handsome," he says. "I think he's going be highly successful in films. He's a very nice person."
The couple got engaged on Valentine's Day and Mother Monster announced the news on her Instagram page with a photo of the stunning heart-shaped ring and the caption, "He gave me his heart on Valentine's Day, and I said YES!"
As for the wedding itself, it sounds like Gaga wants to keep it pretty low-key. Reports say she's planning a family celebration and just before her engagement, she told Howard Stern on his Sirius XM radio show that she wants it to be an intimate event.
"You don't know me very well if you think I'm gonna have a big wedding," she explained. "If I get married I'm gonna be like hanging out of a pickup truck in a David's Bridal [gown] while my stylist is screaming at me, trying to put a blonde wig on my head!"
Hey, we're just happy Taylor finally popped the question and that their "I do's" are in the works. The rest is just details...