King Harald V of Norway and Queen Sonja of Norway arrive at Honnorbrygga in Oslo from where they will start for a lunch trip on The Royal Yacht on May 10, 2017 to celebrate their 80th birthday. / AFP PHOTO / NTB Scanpix / Kallestad, Gorm / Norway OUT (Photo credit should read KALLESTAD, GORM/AFP via Getty Images)
King Willem-Alexander and Queen Maxima of the Netherlands arrive at Honnorbrygga in Oslo from where they will start for a lunch trip on The Royal Yacht on May 10, 2017 to celebrate the 80th birthday of Norway's King Harald and Queen Sonja. / AFP PHOTO / NTB Scanpix / Kallestad, Gorm / Norway OUT (Photo credit should read KALLESTAD, GORM/AFP via Getty Images)
OSLO, NORWAY - MAY 10: Prince Daniel of Sweden and Princess Victoria of Sweden attend a lunch on the Norwegian Royal yatch "Norge" to celebrate the 80th birthdays of King Harald of Norway and Queen Sonja of Norway on May 10 2017 in Oslo, Norway. (Photo by Nigel Waldron/ Getty Images)
OSLO, NORWAY - MAY 10: Princess Martha Louise of Norway, Prince Carl Philip of Sweden, Princess Sofia of Sweden, Crown Prince Pavlos of Greece and Princess Tatiana, Greece attend a lunch on the Norwegian Royal yatch "Norge" to celebrate the 80th birthdays of King Harald of Norway and Queen Sonja of Norway on May 10 2017 in Oslo, Norway. (Photo by Nigel Waldron/ Getty Images)
