Serena Williams dons a black & pink 2-piece swimsuit showing her muscular build.  She looks good at the moment but it does beg a question.  How many “vacation days” would it take for that body to slip into fat assembly mode and she fist pumps her way into our Top Gainers list?

Fat Check:  Is Serena Williams Fit or Fat?

Photo Courtesy of Pichichi/Splash News