The Dutch Royal Family Attend King's Day

ZWOLLE, NETHERLANDS - APRIL 27: Prince Constantijn of The Netherlands, Princess Laurentien of The Netherlands, King Willem-Alexander of The Netherlands, Princess Ariane of The Netherlands, Princess Alexia of The Netherlands, Crown Princess Catharina-Amalia of The Netherlands, Queen Maxima of The Netherlands, Pieter van Vollenhoven, Princess Margriet of The Netherlands, Princess Annette of The Netherlands, Prince Bernhard of The Netherlands, Prince Pieter Christiaan of The Netherlands and Princess Anita of The Netherlands listen to a music performance during King's Day (Koningsdag), the celebration of the birthday of the Dutch King, on April 27, 2016 in Zwolle, Netherlands. Parties and concerts are held across the Netherlands as members of the Dutch royal family oversee festivities. (Photo by Netherlands Royal Pool/Getty Images)