Perhaps not a huge surprise, even with a few wrinkles here and there, they all still look supremely gorgeous -- especially 43-year-old Crawford.
Her anti-aging secret? "Women forget to take care of their décolletage, and it shows their age," she tells the magazine, adding that she protects her chest and complexion with her own skincare line with Jean-Lous Sebagh, Meaningful Beauty.
"I live in California, so I wear sunscreen every day, even if it's
cloudy," says Valletta.
Models Without Makeup
Amber Valletta, 35
"I live in California, so I wear sunscreen every day, even if it's
cloudy," says Valletta.
Peter Lindbergh for Harper's Bazaar
Cindy Crawford, 43
"Your hair texture changes as you age; mine used to be a lot more smooth," says Crawford. "I use Moroccanoil Treatment to keep it hydrated."
Peter Lindbergh for Harper's Bazaar
Claudia Schiffer, 39
"What I eat affects my skin," says Schiffer. "Anything that's heavy, like dairy or sweets breaks out my complexion and it doesn't look as fresh. When I stopped eating dairy, my skin looked nicer."
Peter Lindbergh for Harper's Bazaar
Helena Christensen, 40
"After I get the microdermabrasion and green-tea facial, my skin feels unbelievably soft and dewy," says Christensen of her favorite services at Christine Chin Spa in New York City.
Peter Lindbergh for Harper's Bazaar
Leighton Meester looks fashionably fab on the September cover of Harper's Bazaar. Photo courtesy of Harper's Bazaar
Harlow also looks to the fridge for her beauty fix. "I love putting yogurt and egg whites on my face," she confesses. "It's so moisturizing and soothing."
Pick up the September issue of Harper's Bazaar -- with youthful covergirl Leighton Meister -- for more supermodel beauty tips.
Don't fret, not everyone looks this good sans makeup, check out celebs without makeup here.