Rebel Wilson stuns fans in sexy Halloween costume

Rebel Wilson has stunned again, flaunting her staggering 20kg weight loss in a sexy Halloween costume, rocking a cut-out leotard and cape.

Rebel Wilson has stunned fans with her latest look.

The 40-year-old star — who has lost a staggering 20 kgs this year — rocked a daring Halloween costume flaunting her trimmed-down physique this weekend.

Donning a black leotard with a midriff cut-out and silver bust while dressed a ‘coronavirus killer’, the Pitch Perfect star laughed confidentially as she brandished toy nunchucks for an Instagram video uploaded on Saturday.

“Just call me: RONA (Warrior Princess) … destroying ‘rona wherever I go,” she captioned the playful post.

RELATED: Rebel’s trainer reveals weight loss secrets

Rebel Wilson's sexy Halloween costume. Picture: Instagram.

It was the first of a number of videos Rebel uploaded in her costume, including one doing a warrior-themed dance with her sister Annachi, TV presenter Marissa Montgomery and stuntwoman Meredith Richardson.

RELATED: Rebel stuns in plunging black dress

Rebel’s outfit came complete with a coronavirus cell prop. Picture: Instagram.

It may be her sexiest look yet. Picture: Instagram.

“TOGETHER WE ARE: THE NUN-CHICKS,” Rebel wrote in the caption.

She was later joined in the festivities by her boyfriend Jacob Busch, who popped up on her stories topless in a pre-party selfie.

Rebel and her boyfriend, millionaire Jacob Busch, snapped a quick selfie before the party kicked off. Picture: Instagram.

Another photo of the pair suggests it wasn’t the only Halloween party they headed to this weekend — though the second seemed a slightly more formal affair, with Rebel looking demure in a black T-shirt dress with sheer detailing and creepy skull face paint.

Rebel looked scary good in her party outfits this weekend. Picture: Instagram.

Rebel and Jacob were introduced last year, but only started dating when the comedian returned to the US after quarantining in Australia during the COVID-19 pandemic.

“They are officially boyfriend and girlfriend,” a source told People magazine last month.

“He’s a gentleman, has very old school manners and treats her well.

“He is also very health conscious and they’ve been motivating each other with their health journeys.”

They made their red carpet debut as a couple at Prince Albert’s Planetary Health Gala in Monaco in September.

The handsome fella, 29, is a member of Anheuser-Busch brewing dynasty and is rumoured to be worth more than $140 million.

Rebel Wilson and Jacob Busch went public with their relationship in September. Picture: Getty Images.

Rebel is nearing the end of her ‘Year of Health’, with the actress looking slimmer than ever having revealed earlier this month she was just 3kg away from her ‘goal weight’.

The Pitch Perfect star, 40, shared a celebratory picture following an early morning hike and said she felt “proud”.

“Happy Sunday everyone! Gearing up for a great week ahead,” she wrote.

“This week was super busy but I got up super early 3 times (6am) and went on a hike … even did a couple of 100m sprints to get the heart rate even higher (although my ‘sprint’ is probably someone else’s ‘slow jog’).

“But I felt proud of myself and now only 3 kgs away from my goal weight! Rebs x”.

Rebel Wilson’s ‘Year of Health’ has transformed the star’s physique. Picture: Instagram

She’s said to have lost 20kg. Picture: WireImage.

The star has been dedicated to her exercise regime and healthy nutrition as she dropped dress sizes.

She promised at the start of the year to start a new fitness journey and has been true to her word.

Rebel made a New Year’s resolution to ditch her unhealthy eating habits and kickstart a new fitness journey.

At the time, she wrote on Instagram: “Okay so for me 2020 is going to be called ‘The Year of Health’.

To the delight of fans, she’s been documenting her progress on Instagram.