When it comes to posing nude, Heidi Klum obviously has nothing to fear. The mom-of-four wows in the new issue of Allure magazine, showing off her toned figure and proving that 38 is the new 28! 

"I'm proud to be able to say, in this day and age, I haven't done anything," Heidi tells Allure of going under the knife. "Everyone has a view of what's not pretty, and [plastic surgery] just doesn't look pretty to me." 

OK! GALLERY: HEIDI KLUM SELLS GIRL SCOUT COOKIES WITH HER DAUGHTER LENI 

So how does her skin look so flawless and fabulous? 

"I learned not to go in the sun early on in my career. A tan lasts for a week or two before it fades, and the sun is so damaging — it's not worth it," Heidi reveals. "I put sunscreen on my kids every day before school and before they play outside. They know the routine."

Sadly though, Leni, Henry, Johan and Lou's day-to-day routine has had to change due to Heidi and Seal's decision to divorce. And although it's hard, Heidi says she's taking baby steps and trying to move forward. 

"I had dreams of how I wanted things to be and planned for things and, as we all know today, they don't always turn out as you dreamt them in your head," the model explains.