Serena Williams Shows Off Her Pert Posterior As She Slips Into Red Swimsuit

Serena Williams looked incredible when she wore a red high-leg swimming costume to hang out with model and actor Colton Haynes and a female pal at San Marco river in Texas.

Posting a very sexy shot to her Instagram account, the tennis star showed off her pert posterior in the bright high-legged number. Proud of her curves, the 34-year-old posed in a playful manner while holding a matching rubber ring in her hands.