OSLO, NORWAY - MAY 10: Prince Guillaume of Luxembourg and Princess Stephanie of Luxembourg 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 Marie of Denmark 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 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: Prince Daniel of Sweden and Princess Victoria of Sweden 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)
