Letting the world know that age is just a number, modeling icon Cindy Crawford stunned in a red string bikini while on vacation in Mexico.

According to PEOPLE, Crawford was seen rocking the swimsuit in Cancun, Mexico. She revealed in an Instagram post that she and her husband, Rande Gerber, were celebrating their friends’ 20th wedding anniversary during their trip.

“Such a fun weekend celebrating 20 years of marriage with this golden couple,” Crawford wrote in the post. She tagged friends Jessica and Jason Karp.

“Congrats to a couple who acknowledges the hard work and commitment of making a marriage last,” she continued. “And also makes marriage look fun! We love you guys!”

Crawford and Gerber have been married since 1998 and share a son, Presley, and a daughter, Kaia.

The Central America vacation came weeks after Crawford posted a photo of herself with her daughter’s dog, Milo. The snapshot showed off her makeup-free, natural glow.