Article continues below advertisementSerena Williams is sailing into summer looking stronger than ever.Article continues below advertisementThe 43-year-old tennis legend turned heads as she flaunted her sculpted body on a yacht on Thursday, July 17.Article continues below advertisementSource: @serenawilliams/InstagramSerena Williams showed off her fit body in a blue bikini while on a yacht.Article continues below advertisementIn one snap, she wore a blue bikini top with a matching mesh skirt. The thigh-high slit stole the spotlight, putting her lean legs on full display.