Tennis superstar Serena Williams isn't shy about showing off her booty. On Saturday, Serena hit the beach and took some Snaps while wearing a skimpy bikini. Bootyful. Scroll down for more pics of Serena Williams and her booty. skikdainfo.inforam. "The thong is perfect, it really made me feel comfortable. I'm officially a thong girl now!" I'm officially a thong girl now!" Serena also slipped into this curve-hugging turquoise one piece, which was her favorite look. In addition to rocking multiple suits, she also played around with different steamy settings. See all the photos of Serena Williams in the isssue of Sports Illustrated Swimsuit Edition.