By Leah Ornstein
Radar Style & Beauty Editor

Meg Ryan is still a hard-bodied bikini bombshell at nearly 50-years-old!

PHOTOS: Meg Ryan Reveals Her Bikini Bod In Cancun

The blonde babe made a splash south of the border on Cinco de Mayo, hitting the tropical beaches of Cancun with her beau John Cougar Mellencamp and their families.

PHOTOS: Bikini Babes At Every Age

The adorable actress, who usually drenches her figure in unflattering, frumpy fashions, reminded the world that underneath it all, she still has a fat-free and fabulous figure.

PHOTOS: Bikinis! The Most Ab Fab Stars In Hollywood

Mellencamp and Ryan have been attached at the hip since late 2010, when the rocker separated with his supermodel wife of 20 years, Elaine.