Christie Brinkley looked stunning and healthy as she enjoyed a weekend boat trip in August and showed off her fit figure. Low-key flaunting her sizzling figure, the Sports Illustrated bombshell topped up her tan on the water, wearing a flowing and printed sundress and looking fabulous at 68. In the photo shared with her Instagram followers, the blonde said: "A Moonlight to Remember‼️⚓️Thank you @pridwin 🌟🛟🌕#shelterisland ✨."
Read on to learn about the activities that help her stay in shape, as well as the photographs that prove they work—and don't forget to check out the 30 Top Celebrity Swimsuit Moments to become beach-ready too!