Grand Duke Henri of Luxembourg and Queen Maxima of the Netherlands arrive for a gala dinner at the Royal Palace in Oslo, Norway on May 9, 2017 to mark the 80th Birthday of the King and Queen. / AFP PHOTO / NTB Scanpix / Haakon Mosvold Larsen / Norway OUT (Photo credit should read HAAKON MOSVOLD LARSEN/AFP/Getty Images)
King Willem-Alexander of the Netherlands and grand duchess Maria-Teresa of Luxembourg arrive for a gala dinner at the Royal Palace in Oslo, Norway on May 9, 2017 to mark the 80th Birthday of the King and Queen. / AFP PHOTO / NTB Scanpix / Haakon Mosvold Larsen / Norway OUT (Photo credit should read HAAKON MOSVOLD LARSEN/AFP/Getty Images)
Queen Sonja and King Harald of Norway arrive for a gala dinner at the Royal Palace in Oslo, Norway on May 9, 2017 to mark the 80th Birthday of the King and Queen. / AFP PHOTO / POOL / Haakon Mosvold Larsen (Photo credit should read HAAKON MOSVOLD LARSEN/AFP/Getty Images)
Crown Princess Mette Marit and Crown Prince Haakon of Norway greet wellwishers from the balcony of the Royal Palace in Oslo, Norway on May 9, 2017 to mark the 80th Birthday of the King and Queen. / AFP PHOTO / NTB scanpix AND NTB Scanpix / Audun BRAASTAD / Norway OUT (Photo credit should read AUDUN BRAASTAD/AFP/Getty Images)
Queen Sonja and King Harald greet wellwishers from the balcony of the Royal Palace in Oslo, Norway on May 9, 2017 to mark the 80th Birthday of the King and Queen. / AFP PHOTO / NTB Scanpix / Jon Olav Nesvold / Norway OUT (Photo credit should read JON OLAV NESVOLD/AFP/Getty Images)
