MONTE-CARLO, MONACO - MARCH 28: Charlotte Casiraghi attends the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/PLS Pool/Getty Images)
MONTE-CARLO, MONACO - MARCH 28: Charlotte Casiraghi attends the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/PLS Pool/Getty Images)