Rihanna Is Too Busy to Be an 'X Factor' Judge

Rihanna can't fit much more on her plate right now. She's already handling her music career, Twitter feed, tour schedule, and promoting her perfume, so, unfortunately, there's just no time for reality TV.She recently turned down a spot as a judge on Simon Cowell's US version of the X Factor, and told Ryan Seacrest's 102.7 KIIS FM show: "Yes, it's something that I would have loved to do, actually.