Published Tuesday, 27 August 2013
Sharon Osbourne makes her return to the X Factor judging panel on Saturday. (© Getty)
The pair will be joined at the judge's desk on Saturday by Take That star Gary Barlow and former Pussycat Doll Nicole Scherzinger.
Speaking about her return to the hit series, Osbourne said it was "quite fabulous" to be back.
She added: "It's so much fun and with the new elements it's a totally different show."
This year's hopefuls will first have to face the judges in a small audition room before performing for the public on stage at Wembley Arena to win a place in the bootcamp stage.
Asked how it felt to be teaming up with Walsh again, she said: "Ecstasy. I'm ecstatic to be reunited with my little Lou Lou."
Meanwhile Irish judge Louis has been reminiscing about his ten years on the programme and has named getting a lap dance from singer Robbie Williams during the last series as one of his highlights.
He said: "That's what makes Robbie interesting.
"He goes out there, and he has no fear, and he'll do whatever he has to do with the audience to get them going. That's what he has. That's why he fills out stadiums.
"I didn't look. I was like, 'Oh my God, what am I going to do?' What do you do? The whole country is watching. You just sit there and enjoy it, it's the only thing you can do.
"All the great artists are a bit crazy. And that's good, I like that. Crazy's good."
The 61-year-old, who recently announced that this series of The X Factor would be his last, also said that Simon Cowell sacking him from the show in 2007 because of ageism was a "big mistake".
"I was gutted," he said.
"I couldn't believe I was off the show - me and (presenter) Kate Thornton. I was sure I was safe."
Walsh was replaced by US dancer and choreographer Brian Friedman before he was asked to return.
He said: "They gave Brian Friedman the job, who was brilliant as a choreographer, but he wears these silly clothes all the time. Sharon sent me a text on day one saying, 'It's not working. You could get your job back.'
"Then I had to wait. Simon rang me and said: 'There is a possibility that you could come back,' but then he said, 'You cannot tell anybody.' You can't tell me not to tell anybody. I like to tell!"
The new series of The X Factor starts at 8pm on Saturday 31 August on UTV.
© UTV News