Surprise! The stage opens up to reveal Grammy-winning artist Lady Gaga, who performs "Born This Way" and "You and I."
It looks like she found the right shoes. "My sister, who's 19 years old, she's a fashion student, and she created a sculpture of a high heel. This was her first piece in college," Lady Gaga says. "I made it into a piano to surprise her. Surprise, Natalie!"