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MONTE-CARLO, MONACO - SEPTEMBER 05: Her Serene Highness Princess Charlene of Monaco attends 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)

MONTE-CARLO, MONACO - SEPTEMBER 05:  Her Serene Highness Princess Charlene of Monaco attends 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)