Celebrity NewsGO AWF: Serena Williams Shows Off Her Dance Moves In New Delta Ad – Watch Now! Xaviera 5 years ago share Serena Williams has become quite the dance machine. After dippin it low in Beyoncé‘s “Sorry” video and offering Twerk Tutorials, the tennis champ is getting jiggy in a new ad for Delta. The dope choreography is brought to you by WilldaBEAST. Watch below. Did Serena nail it?