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Dutch King Willem-Alexander and Queen Maxima share a light moment as they pose for pictures in front of a poster depiciting an orange illuminated Opera House's at Cockatoo Island in Sydney on November 3, 2016. The Dutch royals are in Australia to mark the 400th anniversary of explorer Dirk Hartog's landing in Western Australia and the unveiling of Hartog's plate, which is the oldest existing relic of European exploration in Australia. / AFP / SAEED KHAN (Photo credit should read SAEED KHAN/AFP/Getty Images)

Dutch King Willem-Alexander and Queen Maxima share a light moment as they pose for pictures in front of a poster depiciting an orange illuminated Opera House's at Cockatoo Island in Sydney on November 3, 2016.
The Dutch royals are in Australia to mark the 400th anniversary of explorer Dirk Hartog's landing in Western Australia and the unveiling of Hartog's plate, which is the oldest existing relic of European exploration in Australia. / AFP / SAEED KHAN        (Photo credit should read SAEED KHAN/AFP/Getty Images)

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NEWMARKET, ENGLAND - NOVEMBER 03: Queen Elizabeth II during an official visit on November 3, 2016 in Newmarket, England. The Queen unveiled a statue of herself with a foal and a mare which is a gift from the people of Newmarket in celebration of Her Majesty's birthday earlier this year. (Photo by Mark Cuthbert/UK Press via Getty Images)

NEWMARKET, ENGLAND - NOVEMBER 03:  Queen Elizabeth II during an official visit on November 3, 2016 in Newmarket, England.  The Queen unveiled a statue of herself with a foal and a mare which is a gift from the people of Newmarket in celebration of Her Majesty's birthday earlier this year.  (Photo by Mark Cuthbert/UK Press via Getty Images)

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NEWMARKET, ENGLAND - NOVEMBER 03: Princess Haya Bint Al Hussein during an official visit by Queen Elizabeth II on November 3, 2016 in Newmarket, England. Queen Elizabeth II unveiled a statue of herself with a foal and a mare which is a gift from the people of Newmarket in celebration of Her Majesty's birthday earlier this year. (Photo by Mark Cuthbert/UK Press via Getty Images)

NEWMARKET, ENGLAND - NOVEMBER 03:  Princess Haya Bint Al Hussein during an official visit by Queen Elizabeth II on November 3, 2016 in Newmarket, England.  Queen Elizabeth II unveiled a statue of herself with a foal and a mare which is a gift from the people of Newmarket in celebration of Her Majesty's birthday earlier this year.  (Photo by Mark Cuthbert/UK Press via Getty Images)

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NEW YORK, NY - NOVEMBER 02: Queen Rania Al-Abdullah of Jordan speaks onstage during the International Rescue Committee 2016 Rescue Dinner at the Waldorf Astoria Hotel on November 2, 2016 in New York City. (Photo by Jason Kempin/Getty Images)

NEW YORK, NY - NOVEMBER 02:  Queen Rania Al-Abdullah of Jordan speaks onstage during the International Rescue Committee 2016 Rescue Dinner at the Waldorf Astoria Hotel on November 2, 2016 in New York City.  (Photo by Jason Kempin/Getty Images)

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NEW YORK, NY - NOVEMBER 02: Princess Beatrice attends the alice + olivia x Basquiat CFDA Capsule Collection launch party on November 2, 2016 in New York City. (Photo by Astrid Stawiarz/Getty Images for alice + olivia by Stacey Bendet)

NEW YORK, NY - NOVEMBER 02:  Princess Beatrice attends the alice + olivia x Basquiat CFDA Capsule Collection launch party on November 2, 2016 in New York City.  (Photo by Astrid Stawiarz/Getty Images for alice + olivia by Stacey Bendet)