OSLO, NORWAY - MAY 10: King Willem-Alexander, Queen Maxima and Princess Mabel of Orange-Nassau attend a lunch on the Royal yatch, Norge, on the ocassion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
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Getty Images Entertainment Patrick van Katwijk

OSLO, NORWAY - MAY 10: King Willem-Alexander, Queen Maxima and Princess Mabel of Orange-Nassau attends a lunch on the Royal yatch, Norge, on the ocassion of the celebration of King Harald and Queen Sonja of Norway 80th birthdays on May 10, 2017 in Oslo, Norway. (Photo by Patrick van Katwijk/Getty Images)
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Getty Images Entertainment Patrick van Katwijk

OSLO, NORWAY - MAY 10: Princess Mabel of Orange-Nassau, Princess Beatrix of the Netherlands, Queen Maxima of the Netherlands and King Willem-Alexander of the Netherlands 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)
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Getty Images Entertainment Patrick van Katwijk