By Andrew Holleran Even Serena Williams was stunned by what happened between Will Smith and Chris Rock at The Oscars on Sunday night. Earlier Sunday evening, Smith appeared to hit Rock on stage and yell at him for a joke about his wife, Jada Pinkett Smith. Rock reportedly made a joke about Jada Pinkett Smith’s bald head. Pinkett Smith has dealt with hair loss issues in recent years and has opened up about them in emotional fashion. Will Smith, meanwhile, took to the stage to hit Rock before telling him to keep his wife “out of your f—king mouth.” Video of the fight has gone viral. Later in the…