The gym is where celebrity trainer Kirsty Godso starts to have fun. The fitness pro, who counts It-girls like Kaia Gerber, Hailey Bieber, Olivia Rodrigo, Charli XCX, and Ayo Edebiri as clients, sat down with ET at the A Day in the Life at Vuori event in Carlsbad, California, on Nov. 17 to share what goes into her sweat sessions.

But before you even pick up a dumbbell, Godso says the ultimate warm up starts in your closet.

“How you feel in your clothes is so important when you’re going into a workout because if you feel uncomfortable, that’s an energy and emotion you’re carrying with you into everything,” she explains.

Her current style muse: Angelina Jolie in Lara Croft: Tomb Raider, inspired by Gerber’s recent collaboration with the activewear brand.

“Kaia came into the gym in a Lara Croft look with a baby tee and micro biker shorts and I was obsessed. … Vuori’s baby tees are not to be slept on, and I love the low-rise mini shorts because women tend to be insecure about wearing shorts in general, so making this style was a bold decision, but they have flown off the shelves. It’s empowering to see women own their bodies,” she notes.

And the confidence you get from looking the part translates directly into your workout.

“It’s great that Kaia can work hard in the gym, but she can do it in double layered camis and shorts instead of typical performance looking wear,” Godso adds.

As for what the model’s routine entails? It’s safe to say Croft would approve. 

“Kaia is so fit, competitive, coordinated, and driven. … The bulk of our sessions is about strength training, then we add in spicy, athletic style mat Pilates for lengthening and stability, and finish with calculated cardio. … She sprints so fast on a curved treadmill and lifts heavy weights.”

Of course, the trainer also keeps things fun with her upbeat and playful coaching style. 

“I’m very energetic, intuitive, and have a funny sense of humor. I love to work out, but I’m not going to push that on you in a cringe way. … It’s the perfect amount of drill sergeant meets cheerleader. I love to hold people accountable and lift them up at the same time. I want everyone to feel good in their bodies,” the New Zealand native shares.

Godso brings that same vibe to her digital platform, Pyro.

“What I love about Pyro is that it has a gym component and a studio component with over 100 classes. … You can go into a program, which will guide you into doing various modalities, or choose to do à la carte.”

And regardless of Godso’s exercise regimen, she’s sure to show up in chic athleisure wear.

“I’m always in sport mode, not only for my job, but in my personal style too. It’s elevated casual mixed with tomboy, and lately, I’m leaning into my femininity. … I’ve been living in Vuori’s wide leg sweats and hoodies, but I’ll put a halter on underneath. I love that I can do both.”

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