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Princess Margriet of the Netherlands and Professor Pieter van Vollenhoven attend the 35th Peter Stuyvesant Ball on November 18, 2016 in New York. / AFP / KENA BETANCUR (Photo credit should read KENA BETANCUR/AFP/Getty Images)

Princess Margriet of the Netherlands and Professor Pieter van Vollenhoven attend the 35th Peter Stuyvesant Ball on November 18, 2016 in New York. / AFP / KENA BETANCUR        (Photo credit should read KENA BETANCUR/AFP/Getty Images)