Lesley went on to say she had undergone weight loss surgery at just 11 years old, before beginning a spiral of self harming a yo-yo dieting.
"When I was fifteen, I started cutting into my own skin. I thought I deserved it," she wrote.
"When I was twenty, I lost half my body weight in nine months, my worth for the day solely determined by the number on the scale being lower than the day before."
Now 21, Lesley says she has finally learning to love herself. After buying her first bikini, she posted the pic online in a bid to help others learn to accept themselves for who they are.
"You can see it all," she said of the photo. "Weird bulges and rolls of fat. Hanging excess skin. Stretch marks, cellulite, surgical and self harm scars. Awkward protrusion on my abdomen from my lap band."
"I want to learn to love all of myself, not just the parts I've been told are 'acceptable'. Because the secret is, I was always enough. And you are too."
The image has been shared almost 2000 times, and has attracted more than three thousand comments.
"What a wonderful testimony to finding self worth, to love yourself now, because you are so much more than weight or any idealization," wrote one commenter.
"You are fantastic, I always fought, cried and abused my self esteem over my weight, I'm now 78 and finally decided it's ok to look like I do. It took me way too long," said another.
-nzherald.co.nz