An obese woman has lost half her body weight after being told in front of her children she was too large to go on a fairground ride. Denise Fedyszyn, from Holmfirth, West Yorkshire, tipped the scales at 20 stone 4lb - and wore dress size 26 - when she was left feeling mortified while on a family day out with her daughters Anya and Isla. A fairground worker told the 37-year-old: 'You're too fat to ride, I can't fasten the seatbelt' as she tried to go on a swing ride with her children. Denise dressed as a troll in a charity parade before (l) and Ms Fedyszyn after having shed more than 10st (r) It left the mother-of-two embarrassed, upset - and determined to do something about it, so she joined Weightwaters, and changed her diet, as well as taking up exercise. 'I had to do something', Denise, who now weighs just over 10 stone and wears a size 10, said. 'He said it in front of my kids and I couldn't take any more. 'I had always been overweight through my teens and after I married my husband Anton, things got even more relaxed.' After the fairground incident Denise joined a Weight Watchers group at Kirkburton with her long-term friend Lisa Walters. The pair had been mortified with pictures of them as bridesmaids at a friend's wedding    - and they were determined to make a change. Denise and her long-term friend Lisa Walters were mortified with the pictures of them as bridesmaids . After just 12 months, Denise has shed half her bodyweight and now weighs in at a little more than 10 stone. Along the way, she has taken up running, raised more than £500 for charity. Denise said: 'It was all down to that; down to the kids and down to the fact that my dad - who lives at Hepworth - was ill, and because of the stress I resorted to eating all the time. 'That first day I joined Katie's group I decided to go out for a run. It was more of a walk but I persevered and now I run regularly, as well as watch what I eat. 'I knew I had to change my lifestyle and I'm so glad I did. 'I have done charity runs for Age Concern and for dementia research, to help my dad, and am also due to run in London next month and in the Great North Run. 'That weight is not going to go back on.' Lisa Walters weighed 13st 5lbs (left), but in just two months she has shed 35lbs taking her down to 11st (r) Lisa, too is celebrating her weight loss. The mother-of-three, 29, who goes to the Shepley Weight Watchers group, weighed in at 13st 5lbs and size 14/16 when she was a bridesmaid alongside Denise. But in just two months she has managed to shed an incredible 35lbs taking her down to 11st and a slender size 10/12. 'I do exercise but it's more a case of watching what I eat,' said Lisa. Breakfast - Cheese on toast or a large bowl of cereal . Lunch - Pizza and chips or takeaway fast food . Dinner - Burgers or lasagne with lots of cheese . Snacks - Crisps, chocolate bars, biscuits, and lots of wine . Breakfast - Porridge or shredded wheat . Lunch - Kingsmill thins with cheese and salad and a weight watchers yogurt . Dinner - Chicken breast with Weight Watchers spice salad or in a pitta . Snacks - Fruit or Weight Watchers chocolate bar or snacks . 'My husband Joseph and the kids Kieran, 11, Abigail, 6, and Hollie, 4, are all behind me and I intend carrying on with the health regime.' As well as overhauling her diet and exercise regime, Lisa says she has cut back on the alcohol. 'I bought a Fitbit to track my exercise,' she continues, 'I walk a lot more to school and back and have taken up jogging. 'I decided to loose weight after my dad passed away last year, from Chrons disease. He also suffered a blockage but due to his weight they wouldn't operate as he was so high risk. Medical conditions and obesity run in the family. 'Eventually his bowel burst and they had to operate, but he suffered complications during surgery. Obesity was listed on his death certificate as one of the causes of death and I know he would have had a better chance of survival if his BMI was within the healthy range.' As well as overhauling her diet and exercise regime, Lisa says she has cut back on the alcohol .
Denise Fedyszyn, 37, from Holmfirth, was told: 'You're too fat to ride'
Mother-of-two, who weighed  20st 4lb, joined a Weight Watchers group.
Started diet plan and regular runs, and lost more than 10st in 12 months.
Dropped eight dress taking her from size 26 to a size 10.
Inspired, her friend Lisa Walters lots 35lbs in two months.
The pair had been mortified of pictures of them as bridesmaids.