Leona Lewis, British Pop Singer, to Perform on American Idol

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Simon Cowell is set on promoting his new favorite singer.

The American Idol judge will be bringing X Factor winner, Leona Lewis, to the States for a guest appearance on the FOX show's sixth season, slated to begin January 16.

Leona Lewis

Since winning the hit show - Britain's equivalent to American Idol - the 21-year-old singer has dominated the UK music world. She's remained atop the charts overseas over veteran competition such as U2 and Pink Floyd.

Cowell, who is the Leona's manager, has been comparing his protégée to American divas such Whitney Houston and Mariah Carey.

However, it is unlikely the starlet will perform her current single. How come? Because it's actually "A Moment Like This," the track made famous by former American Idol winner, Kelly Clarkson.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.