Rose Ball 2017 To Benefit The Princess Grace Foundation In Monaco [Getty Images]

MONTE-CARLO, MONACO - MARCH 18:(L-R) Pierre Casiraghi, Beatrice Borromeo, 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 Stephane Cardinale - Corbis/Corbis via Getty Images)

Corbis Entertainment Stephane Cardinale - Corbis