Lady Gaga's Stage Fright?

Lady Gaga may not be as fearless as she sometimes seems: According to the New York Post, the singer locked herself in her dressing room before her performance at Monday’s Costume Institute Gala at the Metropolitan Museum of Art and wouldn’t come out until Oprah personally coaxed her. Eventually, she arrived on stage in a crystal catsuit to perform for Anne Hathaway, Taylor Swift, and Mike Bloomberg, among others. Bono, apparently, wasn’t a fan: He left halfway through her performance.