Princess Tatiana of  Greece, Princess Sofia of Sweden and Bernhard Mach 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)