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Rosie Huntington-Whiteley

Charley Gallay/Getty Images for Ulysses Press

Rosie Huntington-Whiteley is feeling healthier and stronger than ever.

The supermodel celebrated Dr. Nigma Talib's "Younger Skin Starts in the Gut" book launch with a party hosted by iS Clinical on Wednesday at the Four Seasons Hotel in Beverly Hills, opening up about how much the book and Dr. Talib's advice has really changed her life.

"We just shared so many of the same philosophies," Rosie told E! News. "Once you change some things in your diet and you remove certain things you're going to see a difference in your skin and a difference in your well-being."

She continued, "Right now I'm on Nigma's plan, which is: no dairy, no gluten, no sugar and no alcohol! And it's been really tough, it is, there's no doubt in my mind that once you start to see and feel results, it's really been transformative for me. I can feel it in my skin, I can feel it in my body, I feel lean right now, and I feel strong and I feel energized."

In fact, she feels so good, she's even gotten her fiance Jason Statham in on the new regimen. "He's equally obsessed about this as I am," she quipped.

Rosie Huntington-Whiteley, Jason Statham

Charley Gallay/Getty Images for Ulysses Press

However, despite all the goodness, Rosie can't help but admit to missing some of her favorite foods and beverages.

"I miss a lot of things," she laughed. "I miss a glass of wine, I miss my cheese plates, and I miss my croissants. But interestingly you can still eat so beautifully and so wholesome and you can really be still so satisfied through healthier choices. It's just switching your mindset a little bit and it takes a couple of weeks to kind of adjust."

After seeing results, Dr. Talib suggests a more balanced "80/20" lifestyle: eating healthy 80-percent of the time and allowing yourself to indulge 20-percent.

"Enjoy life and, you know, celebrations!" Rosie explained. "My kind of balance is trying to eat really well at home and then when I go out...I try and still make smart choices but you know, if I'm going to have some French fries, or if I'm going to share a pudding or a desert with somebody, you want to enjoy those things in life."

She added, "It's all balance! But the 80/20 rule is really, I find that that's the way to go."

—Reporting by Alli Rosenbloom.