To keep her perfectly proportioned body in shape, Naomi says she works out and eats well. Currently, she's following a diet designed for her blood type, O positive.

"I'm eating no gluten," she says. "I stopped eating meat a year and a half ago."

At the gym, Naomi says she does gyrotonics, which helps tone the body and lengthen the muscles. "I don't like workouts that make you bulky. This really stretches you," she says. "What I like about gyrotonics is you feel like you really elongated yourself for the day. ... As we all get older, everything changes and moves, and there's natural ways to exercise. I think it's important, and I think it's something that can help keep things in place."

What's the secret to supermodel skin? Naomi says she jumps rope to keep her face firm, but good genetics are to thank for her wrinkle-free forehead.