London, Sep 14 (IANS): Singer Rihanna has reportedly signed up to be a mentor on the US version of "X Factor".
The 23-year-old is set to help judge L.A. Reid choose his final four contestants for the singing talent show, created by Music mogul Simon Cowell.
"Simon(Cowell) loves Rihanna and loved having her on the UK show last year - so it's no surprise he wants her back. He hasn't officially announced her yet as he loves keeping everyone guessing. But fans are already getting excited," femalefirst.co.uk quoted a source as saying.