MONACO - NOVEMBER 19: Princess Charlene of Monaco and Prince Albert II of Monaco greet the crowd from the palace's balcony with their children Princess Gabriella of Monaco and Prince Jacques of Monaco during the Monaco National Day Celebrations on November 19, 2016 in Monaco, Monaco. (Photo by Thierry Orban/Getty Images)
MONTE-CARLO, MONACO - MAY 28: (L-R) Andrea Casiraghi, Alexandre Casiraghi, India Casiraghi and Tatiana Santo Domingo attend the Monaco Formula 1 Grand Prix at the Monaco street circuit, on May 28, 2017 in Monaco. (Photo by Marc Piasecki/WireImage)
MONTE-CARLO, MONACO - MARCH 18: In this handout image provided by Le Palais Princier, (L-R) Beatrice Borromeo,Pierre Casiraghi, Princess Caroline of Hanover, Karl Lagerfeld and Charlotte Casiraghi attend the Rose Ball 2017 To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 18, 2017 in Monte-Carlo, Monaco. (Photo by Le Palais Princier via Getty Images)
NEW YORK, NY - MAY 19: Jazmin Grace Grimaldi attends the Vulture Festival 2017 Kick-Off Party at The Top of The Standard on the High Line in New York City on May 19, 2017 (Photo by Steven Ferdman/Patrick McMullan via Getty Images)
MONACO - JANUARY 22: Princess Stephanie of Monaco, Camille Gottlieb and Pauline Ducruet attend the 41st Monte-Carlo International Circus Festival on January 22, 2017 in Monaco, Monaco.(Photo by TO-Monaco Pool/Getty Images)
