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OSLO, NORWAY - MAY 10: King Carl Gustaf and Queen Silvia of Sweden 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 Carl Gustaf and Queen Silvia of Sweden 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)