Casey Donovan has lost a whopping 36kg since she started her weight loss journey at the start of the year.
Now, in a candid interview with Woman's Day, the former Australian Idol star has opened up about exactly how she's done it.
Revealing she has taken to walking up to 15,000 steps per day and switched her beloved fast-food for a high-protein diet, she said she is "certainly not finished yet."
"I can't remember the last time I bought a size 18 pair of jeans," she told the magazine, talking of her inspiration behind her new figure.
After initially losing 17kg while on I'm A Celebrity... Get Me Out of Here! the 29-year-old admitted she did gain some of the weight back after leaving the jungle, mostly from fast food and alcohol.
However it didn't take long for the singer to realise she was slipping backwards, so she joined Weight Loss Coaching Works in a bid to get her weight down to under 100kg.
"I could see myself making all the same mistakes and I knew I had to do something," Casey told the publication.
Speaking to Be in September, Casey said she had been "doing [her] very best" to get into shape for summer, while still being "fat shamed all the f*****g time".
"I’m doing my very best but you know it’s hard," the singer explained about managing her fitness and diet regime while hitting the road to promote her new music.
"I get fat shamed all the f*****g time," she revealed to Be. "I get called out for being a bigger girl than I do for the colour of my skin."
Keep up the hard work, Casey. You look amazing.
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