MONACO - NOVEMBER 19: Tatiana Santo Domingo and Charlotte Casiraghi arrive at the Cathedral of Monaco before a mass during the Monaco National Day Celebrations on November 19, 2016 in Monaco, Monaco. (Photo by Pascal Le Segretain/Getty Images)
MONACO - NOVEMBER 19: Tatiana Santo Domingo and Charlotte Casiraghi arrive at the Cathedral of Monaco before a mass during the Monaco National Day Celebrations on November 19, 2016 in Monaco, Monaco. (Photo by Pascal Le Segretain/Getty Images)