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MONTE-CARLO, MONACO - MARCH 19: In this handout image provided by Le Palais Princier, Pierre and Beatrice Casiraghi dance during The 62nd Rose Ball To Benefit The Princess Grace Foundation at Sporting Monte-Carlo on March 19, 2016 in Monte-Carlo, Monaco. at Sporting Monte-Carlo on March 19, 2016 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/Palais Princier via Getty Images)