The Greatest Sia
Feisty Sharon back for the judges house segment
Former X Factor judge Sharon Osbourne will be back on the popular show for a limited period of time.
Osbourne will be joining Louis Walsh for the judges' houses segment, to help him find a group to battle for the X Factor crown.
Ozzy's wife left the show in June 2008 as she wasn't getting along with fellow judge Dannii Minogue. Simon Cowell replaced the 57-year-old with Cheryl Cole, which proved a huge success.
Minogue had ruffled Sharon's feathers when she joined her, Simon Cowell and Louis Walsh as the fourth judge.
Osbourne made no secret of her dislike of Kylie's sister and openly talked to the press about it.
Hopefully there will be little contact between the two women, as during the judges' houses section, Cheryl, Simon, Louis, Dannii and Sharon will be filming in different parts of the world.