AN Australian teenager showed off her dramatic weight loss transformation after dramatically changing her diet.

Josephine Desgrand saw her weight balloon to 19st (120 kilograms) as she gorged on chocolate, sweets and burgers.

But after seeing some inspiring before and after photos on Instagram, she decided to re-vamp her lifestyle.

The 19-year-old has since shed 10st and is a svelte size 8.

Desgrand has battled with her weight all her life.

The teen piled on the pounds after binging on pizzas, chips and burgers.

She also grazed on sugary snacks throughout the day, which is why her size spiraled out of control.

The aspiring author from Queensland said: “I have always been chubby, my family and I love food, so there was always crisps and chocolate in the cupboards.

“I wasn’t comfortable wearing summery outfits and I suddenly realized I needed to change, so I started following weight loss journeys on Instagram and YouTube.”

Inspired by the before and after pictures she saw on social media, Josephine kick-started her weight loss journey.

She ditched her fast food-filled diet in favor of home cooked dishes. Eating protein-rich meals, including chicken salad and grilled salmon, helped the Aussie teen to shed some pounds. She also swapped unhealthy snacks for fruit and unsalted nuts.

The size 8 teenager is now a source of inspiration for others who are looking to lose weight.

More than 130,000 people follow her on Instagram, where she shares her diet tips.

Desgrand said: “I can’t believe the girl in the photos is me, I would never go back as my life has completely changed.”

(SD-Agencies)