The award-winning talent show returns for a new series, but there are a few changes in store. Simon Cowell, Sharon Osbourne and Louis Walsh - sensationally sacked from the show then reinstated earlier this year - are joined by a fourth judge, Dannii Minogue. Choreographer to the stars Brian Friedman joins as creative director, who will help the finalists put together their performances for the live shows, and holding it all together is new host Dermot O'Leary. The age to enter has also been lowered to 14, so there are now four categories - Boys (14-24), Girls (14-24), 25s and Over, and Groups - all hankering after that £1million recording contract. But first up, as usual, are the audition shows, including the story of Louis's return.