It's Uncanny! Demi Lovato Nails Christina Aguilera Impression In The X Factor USA Prank

Uses The Voice star's image to plug rival

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She'd already done a great Adam Levine send-up, but yesterday Demi Lovato took another shot at The X Factor USA's rival show The Voice by using an image of Christina Aguilera in a tongue-in-cheek promo.

Demi, as it turns out, can do a killer Aguilera impression.

The 'Neon Lights' singer took a photo of Xtina, replacing the mouth with super-imposed video of her own mouth, singing an ad for X Factor to the tune of 'Ain't No Other Man'.

She actually sounds quite like the big-voiced 'Genie In A Bottle' hitmaker, and her legion of Lovatics seem to agree.

Demi Lovato and Christina Aguilera (WENN)

"Words cannot describe how perfect your voice is," said one fan, while another wrote: "This funny as hell!! Hahahahaha good Xtina's impression".

The X Factor has been lagging even further behind The Voice than usual over recent weeks, with the first live show of the season achieving less than 5 million viewers. The subequent Results episode had less than 4 million.

However, this week's three-way elimination rallied slightly, bringing numbers back to the right side of 5 million.

It may be too little, too late however - and Fox are widely expected to pull the plug on the contest at the end of the current season, thus paving the way for Simon Cowell to potentially return to the UK version.

Watch Demi's great Keek below.

Nov 16, 2013 | Christina you are SO sweet!!! Thank you so much for supporting the X Factor!!! 😜😝 #xfactorUSA by ddlovato on