Rosie O'Sullivan first appeared on TV screens in 2013 when she performed for Simon Cowell and his Britain's Got Talent judging panel in the hopes of making it through to the next round of the talent competition.
Reaching the semi-finals of the ITV show 13 years ago, the singer, now 30, received many standing ovations and high praise from the music mogul who found One Direction.
While appearing on the show, the mum-of-two was nearly 30 stone and more than a decade later, revealed she had lost 17 stone and had achieved one of her "life goals", which was to undergo a weight loss transformation.
Explaining that she had managed to slim down with the help of a gastric sleeve, the Birmingham native had surgery in 2014, during which "surgeons also cut out the part of the stomach that makes the hunger hormone ghrelin – and since then the weight has dropped off".
Rosie spent a total of £20,000 on weight loss and excess skin removal surgery, and claimed it had enabled her to start properly chasing her dreams of becoming a well-known singer and recording artist.
"I was hot, sweaty and struggled to walk up stairs, and the costume department had to make dresses for me as it was impossible to get trendy clothes in a size 28," she told The Sun about her time on the British talent show.
© InstagramRosie continued: "I hit a real low, and I told my parents I wanted weight loss surgery after seeing an advert online. I was active, I went to the gym and swimming, but I thought about food like an alcoholic thinks about drink, I was obsessed."
The star also shared an update with her Instagram followers and posted a side-by-side transformation photo of her weight loss, with a caption that joked: "When your mum shrinks you in the tumble dryer !!! My number one goal in life achieved right here!!! #weightlosstransformation #weightloss #gastricsleeve."
What is Rosie doing now?
Since leaving BGT during the semi-final stages, Rosie has welcomed two children, Audrey Rose, one, and Patrick, who enjoyed his first day at school earlier this year.
She lists herself as a "professional singer" in her social media bio and regularly posts videos and pictures from various performances and gigs around the country.
Rosie is also the owner of an academy called ROSA, where she offers students the chance to train with her as their vocal coach, teaching people "performance, stage presence, vocal health, and anatomy".
