Christina Aguilera has shown off her dramatic weight loss at the launch of 'The Voice USA' on Sunday.

Reports claim the 'Beautiful' singer has dropped 20 pounds in the last eight weeks thanks to a strict diet and exercise regime.

the voice

Christina Aguilera

Aguilera embarked on a mission to shed her baby weight despite previously being praised for saying how happy she was with her curves a year ago.

She is back on 'The Voice' panel after taking a year out to spend more time with her son Max, 5.

WATCH the video above for more.

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  • At her thinnest Natalie wanted the whole world to know she'd lost weight. An inevitable work out DVD followed.

  • Former 'Loose Women' star Denise Welch lost over two stone after becoming the face of LigherLife and taking up a new fitness regime in 2013.

  • The Steps singer managed to shed the weight she gained after the band split, but then she fell pregnant and battled to lose it since.

  • Gastric-band-gate swept the nation when it was revealed Fern hadn't exactly told the truth about her weight loss.

  • Dawn French was always been known for being a bit on the larger side, and that's why we loved her. Well, there's less of her to love now as since her split with Lenny she's shed a fair few pounds.

  • That picture on the left actually scares us. It's like she wants us to motorboat in that cleavage. Bleugh.

  • Bristolian comic Justin Lee Collins has gone from rock-sized to rock star after dieting.

  • Former Emmerdale actress Pauline Quirke lost several stone after being told she was morbidly obese.

  • It was revealed that Geri's dramatic weight loss was due to an eating disorder. Luckily she's settled back to a healthy weight now.

  • He's the man of the moment on The X Factor, but after the original Take That split Barlow ballooned.

  • James Corden's role in <em>One Man Two Guv'nors</em> helped him to shift over five stone.

  • TOWIE's Gemma shed four stone on a bid to win Mick Norcross. She gave up the bags of crisps but didn't manage to bag the bloke. Good job she's got Arg now then.

  • Pete's frame isn't the only thing shocking here. WTF is with that hair? Anyway, Pete shed the pounds when he split with Jordan. We didn't hear anything about that?

  • Eh up, don our Kerreh look slim. Must 'av been on t'Weight Watchers.

  • Jack Osbourne has struggled a lot with his size and is still yo-yoing with his weight now.

  • Gerard Butler has never exactly been a porker, but he's swapped his stocky frame for a much leaner one.

  • Jessie Wallace looked unrecognisable after slimming down, but since returning to Easties, Jessie has regained Kat's curvier figure.

  • <em>Superbad</em> actor Jonah Hill made jaws drop across the world when he unveiled his new look at an awards bash. He's hoping to lose more too.

  • The once teeny weeny, leather-chaps wearing Christina Aguilera got tongues a-wagging when she ditched her slight frame.