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OSLO, NORWAY - MAY 10: Grand Duke Henri of Luxembourg, Queen Mathilde of Belgium, Princess Beatrix of the Netherlands and Queen Maxima of the Netherlands have their photo taken in a boat on their way to 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 Patrick van Katwijk/Getty Images)

OSLO, NORWAY - MAY 10: Grand Duke Henri of Luxembourg, Queen Mathilde of Belgium, Princess Beatrix of the Netherlands and  Queen Maxima of the Netherlands have their photo taken in a boat on their way to 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 Patrick van Katwijk/Getty Images)