Christy Brinkley showed off her incredibly fit beach bod while spending some fun in the sun with her family.
The blonde bombshell put her tiny waist on display in a purple graphic bikini top and sarong as she explored the tropical locale. She even shared a few of her beauty secrets on Instagram.
"I am wearing Neutrogena Wet Skin broad spectrum," she wrote. "And I always have a hat!! For more tips on diet,exercise, hair make up etc check out my new book Timeless Beauty now available in book stores everywhere! @brinkleybeauty #timelessbeauty."
The sexy supermodel was joined by her equally-gorgeous kids, Sailor and Jack, for a family friend's wedding.
The proud mama shared a sweet snapshot with her mini-me daughter -- and the two look like twins!
"Me and my baby, my baby n me, we're bout as lucky as lucky can be," she gushed. "Watching a wedding in the Caribbean Sea. May Beth and Thomas love forever in clear blue skies and stormy weather! @carafayeearl @realrobertearl @sailorbrinkleycook #luckyhouse #parrotcay."
The 17-year-old beauty is following in her mom's modeling footsteps. She recently graced the pages of Town & Country magazine with her older brother.
But, it seems, she wants to forge their own path. "It can be hard to be up-and-coming and constantly compared to an icon," Sailor told the mag, adding that she's focused on school at the moment.