MONTE-CARLO, MONACO - SEPTEMBER 05:  His Serene Highness Prince Albert II of Monaco, Her Serene Highness Princess Charlene of Monaco, 2015 Princess Grace Awards Gala Honorees Robert Redford and Sibylle Szaggars Redford attend the 2015 Princess Grace Awards Gala With Presenting Sponsor Christian Dior Couture at Monaco Palace on September 5, 2015 in Monte-Carlo, Monaco.  (Photo by Pascal Le Segretain/Getty Images for Princess Grace Foundation-USA)