Diamonds are for SLIMMERS: Husband gives wife a ring with a rock for each of the 9 stone she lost Bev Wright put on weight when her late son was diagnosed with cancer Started to binge on takeaways and eventually weighed more than 20 stone But in 2011 she embarked on a diet after seeing a photo of herself Changed her diet and went to gym 3 times a week and within two years managed to get down to a healthy 11st 4lb - hitting her 9 stone loss target Husband Gary, 54, secretly saved to treat wife when she reached her goal and presented her with a gold ring encrusted with 9 precious gems A woman who shed half her body weight has been rewarded with a gold ring by her husband - complete with a diamond for each of the nine stone she lost. Bev Wright, 53, eventually weighed more than 20 stone after binging on comfort food including biscuits and takeaways. At her heaviest Bev weighed 20st 4lb and rarely left the comfort of her own home. But in 2011 she decided to take action after seeing a picture of herself at her work Christmas party. Bev Wright, 53, from London, lost half her body weight and was awarded a diamond ring for the feat. The ring, that her husband saved up for, contains one diamond for each stone she lost She changed her diet and started going to the gym three times a week and within two years managed to get down to a healthy 11st 4lb - hitting her nine stone loss target. But Bev didn't realise husband Gary, 54. a London underground technician, had secretly been saving to treat his wife when she reached her goal. In the days before she hit her target he went to the jewellers to buy a special diamond ring - with a shining rock for each stone she lost. Mum-of-two Bev, from Chatham, Kent, said: 'I have been overweight all my life. I used to binge on chocolate and biscuits. The usual suspects really. Bev didn't know that her husband Gary, 54, had secretly saved to treat his wife when she reached her weight loss goal Bev's weight spiralled out of control when her two-year-old son Christopher was diagnosed with cancer in 1991. The anxiety and stress caused the teaching assistant's diet to suffer and she binged on biscuits I always struggled with my weight and used to lose two stone then put it back on. I saw a photo of me at a Christmas party and that made me realise how much I had put on. I had gone 50 and was still overweight so thought I needed to change. The ring will always be a reminder and I never want to put this weight back on again. 'I've got so much more energy. I go to the gym three times a week and I walk everywhere. It wasn't until Bev saw a photo of herself taken at a work party that she decided that she needed to take action to lose weight Bev lost the weight by eating healthily, going to the gym and walking everywhere instead of relying the car. She says that since she has lost the weight she has much more energy The anxiety and stress of coping with his sickness and the nights sat by his bedside in Great Ormond Street Hospital meant the teaching assistant never had a balanced diet. And when Christopher tragically passed away in August, 1992, at the age of two, Bev found it difficult to find the motivation to lose the pounds. She said: "I have been overweight all my life but when Christopher was diagnosed with cancer it certainly didn't help. It was the stress of thinking of him up in Great Ormond Street at a time that I was pregnant with my second child. Bev, a teaching assistant, enlisted the help of son Simon, 21, and daughter Angie, 19, to beat her weight problems and also joined Slimming World. She added: 'The kids have noticed, particularly some of the children where I might have taught their siblings before. 'There are still photos of me on our board at school and they all say "I can't believe that's you." Gary has always supported me. I don't think he really thought I was going to stick to it but he never mentioned anything. 'I just think it's because I can eat normal food. We have roast dinners, lasagne - I eat with the family.