Rihanna confirmed for 'X Factor'

Rihanna has confirmed that she will be performing on The X Factor later this month.

The 'Umbrella' singer is expected to sing her new single 'Russian Roulette' and act as a guest mentor on the ITV1 reality show.

Her appearance is expected to tie in with the release of her fourth studio album Rated R, which is released on November 23.

Speaking to The Mirror about working on the show, she said: "I am beyond excited - it was the easiest decision I've ever made. A lot of people watch the show over here on YouTube and I personally caught a lot of it when Leona Lewis was on, who's an amazing artist.

"So to say yes to Simon was an honour, especially as I know the show so well."

Shakira will be the celebrity guest on this Sunday's X Factor, while Britain's Got Talent star Susan Boyle will perform her debut single 'Wild Horses' on the November 22 episode.

The X Factor continues at 8pm on Saturday on ITV1.