OSLO, NORWAY - MAY 10: Prince Joachim and Princess Marie of Denmark arrive at the Opera House on the ocassion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
OSLO, NORWAY - MAY 10: Princess Astrid of Norway arrives at the Opera House on the occasion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Nigel Waldron/ Getty Images)
OSLO, NORWAY - MAY 10: Princess Martha Louise of Norway and Sophie, Countess of Wessex, arrive at the Opera House on the ocassion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
OSLO, NORWAY - MAY 10: Princess Sofia of Sweden arrive at the Opera House on the ocassion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
OSLO, NORWAY - MAY 10: Crown Prince Pavlos and Crown Princess Mary of Greece arrive at the Opera House on the ocassion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
