Demi Lovato Promises Britney Spears Will Be 'Funny,' 'Witty' on 'X Factor'

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After months of hype, the new season of "The X Factor" premieres tonight on Fox, with new judges Demi Lovato and Britney Spears joining Simon Cowell and L.A. Reid on the panel. Not only is the show going to compete with "The Voice" for your attention this season, but it's actually going to compete with "The Voice" tonight - the NBC show has scheduled an episode at the same time.

But Lovato has a few reasons you should watch her show over the other one.

"You really won't expect how funny Britney is. She's really, really funny," she told ABC News Radio. "I laugh all the time at the really witty remarks that she makes." In addition, she promised, "Me and Simon go at it. So, it's always interesting to see what we do to each other and it's an unpredictable show. I think it's gonna be great."

Lovato said she's thrilled to be a judge on "X Factor" because she's always been a big fan of reality singing shows in general. "I actually watched every episode of 'American Idol' the first season and then I felt like nobody could top Kelly Clarkson, so I stopped watching it," she laughed. She admitted, "I'd always wanted to audition for 'American Idol,' and I can't believe that now, by the time I'm old enough, I'm sitting on a panel for an even better show!"

Though the newly-minted MTV VMA winner said joining "X Factor" was a "no-brainer" for her, she wasn't prepared for one particular aspect of the show: "The most surprising thing was how emotionally involved you get with the people auditioning," she said. "You know, you root for everybody … I personally relate to the young girls that are trying to make it - you know, ages 14 to 19 or even older. I know what it's like to want your big break and how much it hurts when you don't get it. So, I think the hardest part is how emotionally involved you get and how much you want people to succeed."

"The X Factor" premieres at 8 p.m. on Fox, and continues Thursday night.