The mum of a four-year-old child has shared her daughter's incredible 12 kilo weight loss journey.
WATCH: Four-year-old Melanie's incredible weight loss journey!
Mum Marla Frazer documented her little girl's mission to lose weight on her Facebook, sharing every detail - from what she ate to her exercise routine - week by week, for 20 weeks.
Marla said when her daughter Melanie began the experiment, "She was tired just walking."
Melanie was 43 kilos on day one of the journey, and was filmed looking unhappy on the weighing scales.
"She wanted to do as other kids did," her mum said, alongside a photo of Melanie dressed in a mermaid costume.
Eventually, her excess weight meant she was struggling.
"The changing point," her mum said in the video, as Melanie began her meal plan - which included eating more veggies and less high-fat foods.
Each week, Marla would upload a new video to document the journey, with photos showing a grinning Melanie who was clearly proud of her progress.
At an update at the 18 week mark, mum Marla said: "She was off the chart on the BMI for kids chart. I'm so proud of her." Alongside a photo showing a happier child and the visible change to Melanie's figure.
In the photos, Melanie's smiles get bigger as her tummy gets noticeably smaller.
Then, after just over four months, Melanie took to the scales again to find out her final weight.
She was 31 kilos, which was a remarkable drop of 12 kilos.
As an ecstatic Melanie danced happily, "Way healthier baby," said her mum.
Less carbs and more cardio can help with weight loss. And during her 20 week transformation, Melanie ditched the junk food and used healthy eating as well an exercise plan, which included roller skating, trampolining and swimming - as well as playing outside - in her mission to lose the extra weight.
"Thanks for the motivation," they posted at the end of the video, which has since gone viral on Facebook.