The year's Sports Illustrated Swimsuit Issue is a family affair for Christie Brinkley and her two daughters.

The timeless beauty who turned 63 this month, shared an Instagram Monday night posing in the water next to her daughters, Alexa Ray Joel, 31, and Sailor Brinkley Cook, 18. Brinkley previously graced three consecutive covers of the magazine's issue dedicated to swimwear in 1979, 1980, and 1981. #ChristieBrinkley