Serena Williams sizzles in black dress at charity gala in Italy

Tennis champion, Serena Williams who has been travelling around Europe this week was in Nice, France at the launch of her coach Patrick Mouratoglou's Tennis Academy with tennis champion Novak Djokovic. 

Then on Tuesday, she attended a Charity Gala Dinner in Milan, Italy, benefitting Novak's Foundation which helps children in his country of Serbia with grants for their education.