OSLO, NORWAY - MAY 10: King Carl XVI Gustaf and Queen Silvia of Sweden are seen arriving 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 Rune Hellestad - Corbis/Corbis via Getty Images)
OSLO, NORWAY - MAY 10: King Juan Carlos and Queen Sofia of Spain 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: ( L to R ) Queen Margrethe of Denmark and Queen Anne Marie of Greece attend a Gala Banquet hosted by The Government at The Opera House as part of the Celebrations of the 80th Birthdays of King Harald and Queen Sonja of Norway. on May 10, 2017 in Oslo, Norway. (Photo by Julian Parker/UK Press via Getty Images)
OSLO, NORWAY - MAY 10: King Willem-Alexander and Queen Maxima of The Netherlands 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: King Philippe and Queen Mathilde of Belgium are seen arriving 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 Rune Hellestad - Corbis/Corbis via Getty Images)
