In a new Instagram post, Jen flaunted her defined arms, toned legs, and strong abs while sporting a tiny, string bikini. Whether lounging on a beach chair or taking a hot girl walk down the. Jennifer Aniston, 53, proves she is still a knockout as she shares flashback bikini photos from her latest beach vacation By Heidi Parker For Dailymail.com Published: 15:49 EDT, 15 August 2022.