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Lucy Mecklenburgh strips down to show off shocking weight loss after Celebrity Island

The 26-year-old shared a before-and-after photo from her time on the show

Gemma Strong

Lucy Mecklenburgh's appearance on Celebrity Island certainly took its toll. The 26-year-old health and fitness expert took to Instagram on Tuesday to show fans her dramatic weight loss following her time on Bear Grylls' gruelling survival show. Lucy posted a before-and-after photo to demonstrate her incredibly slim post-show figure, having recently revealed she lost around two stone while filming the programme. "My poor little body!!!!" she wrote alongside the photo. "Sooooo emotional watching the last ep of #celebrityisland… I can't believe we did it. I can't believe I did it, what an experience! I will never doubt myself ever again!!! Met some incredible people that will be friends for life. So proud of us all!!! #celebrityisland #beargrylls #theisland. PS It only took me 3 weeks to put all my weight back on! I ate A LOT HAHAHAHAHA!"

Lucy Mecklenburgh has shown off her dramatic weight loss following her time on Celebrity Island

Lucy – who found love with former Coronation Street actor Ryan Thomas on the show - previously revealed she purposefully put on weight before filming to help her survive the tough conditions. "I was told you should get used to eating less and less, but then I was told, 'No, no, no, you need to put on some weight.' So I put on half a stone," she told the Mirror.

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The former TOWIE star found love with Ryan Thomas on the survival show

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"It was weird because when you're there you don't really feel thin as you are because you don't have a mirror so you don't really know how tiny you are, and then you get back and you realise. I must admit it was really nice to indulge. I put on all the weight in three weeks and the doctor was like: "Wow that is some serious eating."'