Can't Cope Won't Cope creator and writer Stefanie Preissner has revealed how she lost 11 stone in a year and a half.
Appearing on Friday night's The Late Late Show, Stefanie shared some before photos before explaining her weight loss journey.
However, when host Ryan Tubridy asked her to tell him about that "different Stefanie", she assured him that she was the same person now as she was back then - she just looked different.
"She was the same as me, same thoughts, same ideas, she just looked different. But I grew up like that so that it is what I knew. And I had never tried to lose weight... I was just always overweight and I just thought that was who I was."
Stefanie explained that she decided to make a change when she caught her reflection in a shopfront.
"I was walking down Grafton Street one day before I lost the weight... and I was inspired by Victoria's Secret. The shopfront was being built and it was covered in that black contact so it was kind of warped and I saw this person in the reflection. I thought 'that's a large person' but then I got closer and realised it was me.
"Obviously I had seen mirrors before but it was like a rare opportunity to see yourself as other people see you," she said.
That moment encouraged her to lose weight. She asked her friend Michelle if she thought she could lose six stone in a year and she told Stefanie that she "can do anything you want to do".
"I made my decision in that moment and did it."
Stefanie explained that while it wasn't necessarily easy, she made it simple for herself.
"I need a rule, a very black and white thing. I had to make it simple by making a rule," she said. "I made one simple rule: I don't eat sugar. I don't eat sugar of any description. I also started kickboxing twice a week because as a writer it's easy to be sedentary."
Stefanie admitted that she lost 11 stone in a year and a half but explained that the weight loss has made people treat her differently, despite the fact that she's the same person as she was before she lost the weight.