Christie Brinkley will turn 60 on Sunday, and she's celebrating by showing off her birthday (swim)suit on the cover of People magazine. The model and mom of three said she is feeling better than ever as she heads toward the milestone. "I'm actually excited about turning 60," Brinkley told People. "My 50s weren't easy. ... But I made it through. Now I feel on top of my game." Here are a few other celebs who are sexy in their 60s.