[Smithy]

he X Factor will return to ITV1 with an all-new judging panel on Saturday, August 20 at 8pm.

Tulisa Contostavlos, Louis Walsh, Gary Barlow and Kelly Rowland will star in the eighth series of the reality show.

Dermot O'Leary is back as the host, guiding viewers through the best and worst auditions from around the UK.

New challenges will face the acts if they make it through the auditions, Boot Camp and Judges' Houses stages of the competition. Producers have introduced new twists to increase the pressure on the contestants.

An X Factor source told Digital Spy: "The show is back and bigger than ever. Everybody working on the series is excited about being part of the most talked-about programme on TV all over again.

"Gary Barlow has been a brilliant addition to the judging panel, he's really dry and funny. Kelly Rowland will surprise people, Tulisa is definitely going to be a hit and Louis Walsh is re-energised and has a great new dynamic with all three of his new co-stars."

Hosts Olly Murs and Caroline Flack have replaced presenter Konnie Huq on ITV2's The Xtra Factor, which launches on the same night at 9.15pm.

Ahhh, I'm excited