The internet is abuzz about Serena Williams and Novak Djokovic yet again. But this time it`s not for their on-court antics but for their dancing! Both the champs took to the stage at Wimbledon`s annual Champions` dinner and delivered an impromptu performance of Bee Gees` Night Fever. As both stars proved that they had no clue about dancing, the world could see that how the greatest of stars can let go of all the airs and just have fun; entertaining millions while at it.