Rebel Wilson shows off her incredible 18kg weight loss as she sweats it out in a steam room

Rebel Wilson shows off her incredible 18kg weight loss in a figure-hugging bodysuit as she sweats it out in a steam room while staying at a luxury Austrian medical spa

She’s been enjoying a stay at a luxurious Austrian medical spa to finish off her ‘year of health’ on a high note. 

And on Monday, Australian actress Rebel Wilson showed off her incredible 18kg weight loss as she sweated it out in a steam room at the Vivamayr wellness retreat. 

The 40-year-old stripped off into a figure-hugging black body suit for the sweat session, sharing some images to Instagram.   

Sweat it out! On Monday, Rebel Wilson showed off her incredible 18kg weight loss in a figure-hugging bodysuit while enjoying a steam room at a luxury Austrian medical spa

‘Queen of Steam!’ Rebel captioned one image of herself. 

She posed up for a picture in her black outfit, that featured a bustier-style top. 

Rebel went makeup free and tied her long blonde locks up and off her face. 

Health benefits: Steam rooms are said to help with losing water weight and help users burn calories faster

Health benefits: Steam rooms are said to help with losing water weight and help users burn calories faster

Steam rooms are said to help with losing water weight and help users burn calories faster.  

Rebel has been at the wellness retreat for almost a week now and has documented her stay online with fans. 

While there, she has enjoyed hiking, swimming and walking.

Keeping fit: Rebel has been at the wellness retreat for almost a week now and has documented her stay online with fans. While there, she has enjoyed hiking, swimming and walking

Keeping fit: Rebel has been at the wellness retreat for almost a week now and has documented her stay online with fans. While there, she has enjoyed hiking, swimming and walking

She recently said she was ‘finishing my year of health off strong at the place that gave me that first kick start.’

In a new interview with People magazine, Rebel admitted to scoffing 3000 calories daily before embarking on her new diet. 

‘Before I was probably eating 3,000 calories most days, and because they were normally carbs, I would still be hungry,’ she explained.

The blonde beauty has now switched to a high protein diet instead, which she said was ‘challenging’ because she wasn’t a big meat eater before.

Rebel revealed that she’s tried to make an overall healthy lifestyle change for herself without strictly forbidding herself from indulging from time to time.

In addition to changing her diet, Rebel has also been working out with celebrity trainer Jono Castano.

Fitness and diet overhaul: In a new interview with People magazine, Rebel admitted to scoffing 3000 calories daily before embarking on her new diet

Fitness and diet overhaul: In a new interview with People magazine, Rebel admitted to scoffing 3000 calories daily before embarking on her new diet