
Rebel Wilson is fierce no matter what she does — and her workouts are no different.
The romantic comedy actress looked slimmer and fitter than ever in a fitted black dress at the Melbourne premiere of Muriel’s Wedding: The Musical on Saturday, March 23. And her dedication to the gym has everything to do with it.
“She is crushing!” her personal trainer Gunnar Peterson exclusively tells Us Weekly of the Pitch Perfect star. “Never misses [a workout]. Comes in even on travel days and right when she gets back. She is locked in!” Adds the pro, who counts Kate Beckinsale, Khloé Kardashian and plenty of other A-listers as clients, “I love working with her!”

And their routine is rigorous. “Lots of strength work with dynamic intervals spliced throughout,” says the celebrity trainer. “Think sled work, Technogym’s SkillRun treadmill with sled and parachute protocols, focus mitts, moving kicks to pads, rope work, vertical rope work, sledgehammers.” Basically, Peterson tells Us, “any and everything to keep her body guessing and her mind engaged!”
Wilson, next starring in the movie The Hustle with Anne Hathaway, started showing her weight loss in October 2018. A few months prior, her L.A.-based trainer revealed that the 39-year-old worked out with him “a solid four days a week” when she was in town.
As Peterson told Us at the time, the Sydney native — who modeled for her first Vogue Australia cover last May — works hard doing a mix of dynamic strength training, cardio and high-intensity interval training (HIIT) during their sessions, but she also knows how to find the fun within her intense fitness regimen. “During the workout it’s work,” he said. “But in between, we’re going to trade a pleasantry or a joke or a jab. Rebel’s right there with you. She’s clever and funny and smart. I love being around people like that. That’s why I like this job.”
While Wilson enjoys her work outs, she revealed in 2016 that she purposely gained weight early in her career to help her get famous — and it worked. “I saw my size as being an advantage whereas so many women see it as a disadvantage,” she said.