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MONACO - JULY 11: (L-R) Camille Gottlieb, Pauline Ducruet, Princess Caroline of Hanover, Andrea Casiraghi and Tatiana Casiraghi attend the First Day of the 10th Anniversary on the Throne Celebrations on July 11, 2015 in Monaco, Monaco. (Photo by PLS Pool/Getty Images)

MONACO - JULY 11: (L-R) Camille Gottlieb, Pauline Ducruet, Princess Caroline of Hanover, Andrea Casiraghi and Tatiana Casiraghi attend the First Day of the 10th Anniversary on the Throne Celebrations on July 11, 2015 in Monaco, Monaco.  (Photo by PLS Pool/Getty Images)