Katie Williams says she is a delighted 'super slimmer' after going from 21 stone to 11 stone - and she says it's the best thing she's ever done, despite the fact that it cost her her marriage.
35-year-old Katie went from a size 24 to a size 10-12 shedding almost half her bodyweight. The transformation gave her a massive boost in confidence, she says.
However, her husband soon became jealous of the attention she received and the trust started breaking down.
The couple eventually broke up last year - but Katie has bounced back by finding a 'toyboy' who is 12 years younger than her.
Mum-of-two Katie says the only thing she was ever unhappy about was her weight,
"I didn't let it show, but I wasn't happy at all. I used to get very sad at times, and I knew I had to sort it out.
In preparation for her wedding in 2013, she had a gastric bypass, followed by a tummy tuck and breast lift, giving her a new figure and a new boyfriend too.
"When I first saw her my jaw hit the floor," says Jack. "The age difference doesn't bother me at all - it's just a number," he says.
And he says he likes the attention his girlfriend gets. "Everyone stares at Katie because she is so good-looking."