Though Kate Upton is the cover star of the Sports Illustrated 2017 Swimsuit Issue, inside is a real winner — Serena Williams. The tennis superstar joins the legions of other athletes-turned-SI-models, stepping off the court and onto an idyllic Turks and Caico beach for a grand-slam of a spread. Fresh off her history-making Australian Open win, she flexes in an assortment of barely-there swimwear and goes topless altogether for one look.

Take a peek at Williams’ photos above, then see the rest of her shoot at Sports Illustrated.