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MONACO - SEPTEMBER 10: Princess Charlene attends the annual traditional 'Pique Nique Monagasque' on September 10, 2016 in Monaco, Monaco. (Photo by PLS Pool/Getty Images)

MONACO - SEPTEMBER 10:  Princess Charlene attends the annual traditional 'Pique Nique Monagasque' on September 10, 2016 in Monaco, Monaco.  (Photo by PLS Pool/Getty Images)