Rihanna can't be X Factor judge
Rihanna has ruled herself out of a role on the US X Factor.
Asked about rumours that she was getting a judging role on Simon Cowell's show, the 23-year-old singer said she was too busy.
She told US radio show On Air With Ryan Seacrest: "Yes, it's something that I would have loved to do. But my schedule doesn't allow because we are going to be on tour for the rest of the year.
"It's a demanding schedule. To be on that show you have to be around for months at a time. That makes it impossible for me."
The Barbados-born singer praised Britney Spears in the interview, after the pair recorded a cover of her latest single S&M.
"She was great, very professional and worked very hard," she said.