Why Rihanna Really Bailed on the Grammys

Rihanna pulled out of her Grammys performance just hours before the awards show, with her rep claiming a bad case of bronchitis was to blame. But sources tell TMZ she actually bailed because she was too upset. It's not clear exactly what she was upset about, but the sources say she had a loud meltdown because she was unhappy with some part of her rehearsal before the show. Sources also tell the gossip site her voice sounded good at the rehearsal, despite the fact that the official story was that she had to rest her voice due to her illness, the New York Daily News reports. (James Corden gave his "inside" story of the cancellation.)