Call us cynical but with the hope of landing a lucrative exercise DVD, there is added incentive to shift the pounds for celebs and there seems to be a helluva lot of them ditching the carbs these days.

Check out this gallery of dieting stars who've lost the weight - and in some cases put it all back on again...

Loading Slideshow...
  • 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.