Lara, a 38-year-old mother, likened herself to a "beached whale", but now proudly boasts about walking around the house in her undies and hitting the clubs in heels, thanks to daily workouts with Nintendo's software.
Of course, it wasn't just the Wii that shaved off the weight. She used to chomp down more than 4,000 calories a day, including cooked brekkies, pizza, cheese sandwiches, crisps, cakes and "litres of fizzy drinks a day".
But that all stopped when a friend told her she "never stopped eating", according to News of the World. Harsh love, but clearly it works sometimes.
At least that friend didn't say: "You eat constantly, you fat cake-munching walrus. Put those freaking sour cream Pringles back in the cupboard and meet my friend Mr. vegetable." That might not have gone down quite so well.