Williams Joins X Factor

ROBBIE WILLIAMS has sealed his comeback by joining British TV talent show THE X FACTOR - the pop star has become the new series’ first celebrity mentor.

The finalists were given a crash course in pop music from the Angels singer, who spent a week guiding the wannabees at London’s Soho Hotel.

Each hopeful also got the chance to sing Williams’ songs as he accompanied them on the piano and doled out advice.

Former Take That star Williams admits he’s a huge fan of the show.