Naomi Campbell
is still on top of her game!

The 42-year-old supermodel rocked the runway for designer Philipp Plein during Milan Fashion Week on Sunday, showing off her hot body in a leather, cropped "cowgirl" tube top, black studded pants, bedazzled boots and a cowboy hat.  

The brunette beauty stole the spotlight at the show, proving that she just keeps getting better with age.

So, how does she maintain her enviable figure?

Naomi said 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 told Oprah.com. "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."

Her workout routine is certainly paying off!

What do you think of Naomi's killer abs? Sound off below, and click "Launch Gallery" above to see more sexy supermodels, then and now.

Hot Videos