Original Sugababes’ Keisha brags about her weight loss, shows off body posing half naked

We were looking forward to a weekend of takeaways and wine, but now we're not so sure.

Keisha Buchanan has tweeted a photo of her flat stomach. Copyright [Keisha Buchanan]

Keisha Buchanan from the Original Sugababes lineup has tweeted a half-naked photo of herself showing off her weight loss and toned stomach. And it's given us SERIOUS body envy.

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Keisha posed in her underwear for the photo, and posted it alongside the caption: "Morning!!! #workouttime #fitfresh #tinywaist #hips #boobs #butt #teamhourglass #letsgetitladies"

Hmm, yes we'd love to have a tiny waist, hips, boobs and butt. Sadly we don't have the same dedication to the gym.

Keisha has lost weight since this photo was taken in October. Copyright [WENN]Keisha's half-naked Twitpic follows a series of snaps from celebs showing off their amazing toned bodies. Yes, we're looking at YOU Maria Fowler.

However, Keisha could well be embarking on this strict diet and exercise plan because the Original Sugababes (now renamed MKS) are set to release their new material this year.

Speaking to Ponystep magazine, Keisha revealed: "There were a lot of things misconstrued over the years and we weren't in a good place. But we reached an understanding and were able to move forward. I think it's a step up from the first album. I just hope people will enjoy it. Actually, I know people will enjoy it!"