OSLO, NORWAY - MAY 17:  (L-R) Crown Prince Haakon of Norway, Prince Sverre Magnus, Crown Princess Mette-Marit of Norway, Princess Ingrid Alexandra, Queen Sonja and King Harald of Norway appear on the balcony of The Royal Palace in Oslo to celebrate Norway's National Day, on May 17, 2015 in Oslo, Norway.(Photo by Julian Parker/UK Press via Getty Images)