MONACO - JULY 11: (L-R) Charlotte Casiraghi, Pierre Casiraghi and Beatrice Borromeo attend the First Day of the 10th Anniversary on the Throne Celebrations on July 11, 2015 in Monaco, Monaco. (Photo by Pascal Le Segretain/Getty Images)
MONACO - JULY 11: (L-R) Charlotte Casiraghi, Pierre Casiraghi and Beatrice Borromeo attend the First Day of the 10th Anniversary on the Throne Celebrations on July 11, 2015 in Monaco, Monaco. (Photo by Pascal Le Segretain/Getty Images)