Norway`s Royal Family (L-R) Crown Prince Haakon, Crown Princess Mette-Marit, Prince Olav Magnus, Queen Sonja, Princess Ingrid Alexandra and King Harald greet people from the balcony of the Royal Palace in Oslo, on May 17, 2017, during celebration of Norway`s Consttution Day. / AFP PHOTO / NTB Scanpix / Vegard Wivestad Grott / Norway OUT (Photo credit should read VEGARD WIVESTAD GROTT/AFP/Getty Images)
ASKER, NORWAY - MAY 17: Princess Mette Marit of Norway, Princess Mette Marit of Norway, Prince Sverre Magnus of Norway, Princess Ingrid Alexandra of Norway greet the children in the parade at their home, Skaugum on Norway's National Day on May 17 2017 in Asker, Norway. (Photo by Nigel Waldron/ Getty Images)
ASKER, NORWAY - MAY 17: Princess Mette Marit of Norway, Princess Mette Marit of Norway, Prince Sverre Magnus of Norway, Princess Ingrid Alexandra of Norway greet the children in the parade at their home, Skaugum on Norway's National Day on May 17 2017 in Asker, Norway. (Photo by Nigel Waldron/ Getty Images)
ASKER, NORWAY - MAY 17: Princess Mette Marit of Norway greets the children in the parade at their home, Skaugum on Norway's National Day on May 17 2017 in Asker, Norway. (Photo by Nigel Waldron/ Getty Images)
ASKER, NORWAY - MAY 17: XPrincess Ingrid Alexandra of Norwayduring the children's parade at Skaugum on Norway's National Day on May 17 2017 in Asker, Norway. (Photo by Nigel Waldron/ Getty Images)
