Published Friday, 29 August 2014
Simon is joined on the judging panel this year by veteran Louis Walsh, former Spice Girl Mel B and Cheryl Fernandez-Versini as the show kicks off with the opening auditions.
Former judge Tulisa Contostavlos also joins Walsh for this year's judge's houses stage.
Ahead of the show airing on Saturday, some sneak peek clips have been released of three auditions.
A fresh-faced 15-year-old Reece Bibby serenades the judges and plays guitar.
While Chloe Jasmine charms Mel B with her posh English accent and sultry singing of Ella Fitzgerald's Black Coffee.
However, sisters Jazzy, 24, and Ruby, 22, aka 'Blonde Electric' and their version of Jessie J's 'Do It Like A Dude' doesn't go down that well with Simon.
"Imagine the biggest blackboard in the world and you've got eight people drawing their nails down it, times 10. That's how irritating you are," he tells them.
"It's like literally you've been invented by Louis in a computer to create the most annoying girl group in the world."
Meanwhile there is déjà vu for for judge Cheryl, as one of her old acts returns in a bid to make it to the finals.
She is brought to tears by 25-year-old Amy Connelly, who lost out at the judges' house stage in 2008.
"That was really beautiful, it was captivating. Honestly, this is like a flashback for me, it's something that you do to me, we just have a connection," the former Girls Aloud member tells her.
Other acts trying to impress Cheryl in the auditions are Irish singer Ben Quinlan who presents her with a green rose, while 42-year-old hairdresser Jale Antor makes an unforgettable impression dressed as the pop singer in the Fight For This Love video before performing her own unique take on the number one hit.
The X Factor airs on UTV on Saturday and Sunday at 8pm.
© UTV News