(L-R) Princess Alexandra, Charlotte Casiraghi, Princess Caroline of Hanover, Beatrice Borromeo, Louis Ducruet and Princess Stephanie of Monaco appear on the balcony of the Monaco Palace during celebrations marking Monaco's National Day

Princess Stephanie of Monaco (R) and Charlotte Casiraghi appear on the balcony of the Monaco Palace during celebrations marking Monaco's National Day

(L-R) Princess Charlene of Monaco, Charlotte Casiraghi, Pierre Casiraghi, his wife Beatrice Borromeo and Louis Ducruet attend the celebrations marking Monaco's National Day at the Monaco Palace in Monte Carlo

(L-R) Princess Charlene of Monaco, Charlotte Casiraghi, Prince Albert II of Monaco, Pierre Casiraghi and his wife Beatrice Borromeo attend the celebrations marking Monaco's National Day at the Monaco Palace in Monte Carlo