X-Factor judge Sharon Osbourne said she was in "ecstasy" at being reunited with Louis Walsh on the hit singing show.
The pair are joined on the judging panel by Take That star Gary Barlow and former Pussycat Doll Nicole Scherzinger.
Sharon said it was "quite fabulous" to be back, adding: "It's so much fun and with the new elements it's a totally different show."
Asked how it felt to be teaming up with Louis again, she said: "Ecstasy. I'm ecstatic to be reunited with my little Lou Lou."
And Louis said he was glad to have her back, describing her as "a ball of energy" on the ITV talent show.
He said: "Whatever has happened, whatever she does in LA - I'm not saying anything but she definitely looks younger."
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.
The new series starts at 8pm on Saturday on ITV1.