Ariel Winter: I'm Ahead of the Curve!

One thing's for sure ... Ariel Winter knows squat.

The "Modern Family" star sizzled at Atlantis Resort in the Bahamas with BF Laurent Gaudette ... who couldn't look prouder holding hands with his 18-year-old chick.

If ya got it, flaunt it.

Ariel's "Modern Family" co-star Nolan Gould is down there too. Sunscreen, bro. Lots of sunscreen.