Former supermodel Carol Alt — whose jaw-dropping figure at 59 years old set the internet ablaze Wednesday — told Page Six Style that her secret to taut abs and an enviable figure is eating dessert.

“Sometimes I’ll just order a tiramisu and like, for the last three days, I’ve been eating that for dinner,” Alt admitted.

But there’s one catch: It’s entirely made of raw ingredients.

“Tiramisu is more nourishing for me than having a ham sandwich because it’s made from coconuts and all this amazing stuff so it’s very nourishing and filling,” she explained.

Ever since she went raw in 1996, Alt has been an outspoken advocate for the diet’s “life-changing” benefits and has penned several books about it, including “Eating in the Raw: A Beginner’s Guide to Getting Slimmer, Feeling Healthier, and Looking Younger the Raw-Food Way,” published in 2004.

In the heyday of her modeling career, Alt, weirdly enough, used to live off carbs. “For so long I was eating spaghetti twice a day on the set of my movies. I ate so many carbohydrates because they kept me thin,” she said.

Today, she allows herself guilty pleasures, although they’re on the healthier side. “At Rao’s, they make me gluten-free pasta and gluten-free eggplant … it’s the best I’ve ever had,” she said. “I’m not an angel.”

As for booze? “I try to stay away from alcohol because it’s really, really addictive, but I can’t say during [the COVID-19 pandemic] I haven’t had a glass of nice white wine here and there.”

It was Alt’s love for her new, healthier self that inspired her to pose topless in a pair of tiny bikini bottoms as part of Sports Illustrated Swimsuit’s #SwimsuitIconChallenge.

“You work out and you work out and you work out and you just want to say ‘Hey, look, I work out and I’m 60 freaking years old this year!’” she exclaimed.

And the native New Yorker’s workout regimen is no small feat: She alternates between using her Pilates PRO Chair, Core 46 machine, cycling in the sauna, jumping on a trampoline, lifting weights and doing lunges and squats, all in her own home.

Alt was still shocked by the outpouring of fawning fans, though.

“I never expected this, believe me,” she said. “When I went to push the button to share, I had to stop and take a deep breath.”

Alt, a 1982 Sports Illustrated Swimsuit cover girl herself, was encouraged by a friend to participate in the challenge, which asked fans to recreate their favorite swimsuit cover photos of the past.

The model and animal lover decided on Marisa Miller’s 2008 snap because “I always wanted to shoot a photo on the beach in the sand,” she said.

So Alt asked photographer and friend Ezequiel de la Rosa to help out — since she lives alone with her two cats — and he shot the photos on an iPhone 11 to put her on equal footing with the challenge’s other participants.

Admittedly, she did use a bit of Photoshop. “I have a scar on my belly so we erased that,” she told us. “But that’s it.”