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AMSTERDAM, NETHERLANDS - APRIL 30: King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands (R) leave after the inauguration ceremony of King Willem Alexander of the Netherlands and Queen Maxima of the Netherlands, at New Church on April 30, 2013 in Amsterdam, Netherlands. (Photo by Jasper Juinen - Pool /Getty Images)

AMSTERDAM, NETHERLANDS - APRIL 30:  King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands (R) leave after the inauguration ceremony of King Willem Alexander of the Netherlands and Queen Maxima of the Netherlands, at New Church on April 30, 2013 in Amsterdam, Netherlands.  (Photo by Jasper Juinen - Pool /Getty Images)

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Dutch King Willem-Alexander and Queen Maxima visit Dwingeloo, The Netherlands, on May 28, 2013. The royal couple will visit all 12 Dutch provinces, starting in Groningen and Drenthe. The intention of the tour is to give many people a chance to meet the new King and Queen. AFP PHOTO/ LEX VAN LIESHOUT netherlands out (Photo credit should read LEX VAN LIESHOUT/AFP/Getty Images)

Dutch King Willem-Alexander and Queen Maxima visit Dwingeloo, The Netherlands, on May 28, 2013. The royal couple will visit all 12 Dutch provinces, starting in Groningen and Drenthe. The intention of the tour is to give many people a chance to meet the new King and Queen. AFP PHOTO/ LEX VAN LIESHOUT netherlands out        (Photo credit should read LEX VAN LIESHOUT/AFP/Getty Images)

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SOCHI, RUSSIA - FEBRUARY 10: King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands attend the Short Track events on day 3 of the Sochi 2014 Winter Olympics at Iceberg Skating Palace on February 10, 2014 in Sochi, Russia. (Photo by John Berry/Getty Images)

SOCHI, RUSSIA - FEBRUARY 10: King Willem-Alexander of the Netherlands and Queen Maxima of the Netherlands attend the Short Track events on day 3 of the Sochi 2014 Winter Olympics at Iceberg Skating Palace on February 10, 2014 in Sochi, Russia. (Photo by John Berry/Getty Images)

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LONDON, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Queen Maxima of the Netherlands attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 8, 2015 in London, England. The National Service of Remembrance takes place at the Cenotaph in Whitehall, London. The Queen, senior politicians, including the British Prime Minister and former British Prime Ministers, alongside representatives from the armed forces pay tribute to those who have suffered or died at war. (Photo by Max Mumby/Indigo/Getty Images)

LONDON, UNITED KINGDOM - NOVEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Queen Maxima of the Netherlands attend the annual Remembrance Sunday Service at the Cenotaph on Whitehall on November 8, 2015 in London, England. The National Service of Remembrance takes place at the Cenotaph in Whitehall, London.  The Queen, senior politicians, including the British Prime Minister and former British Prime Ministers, alongside representatives from the armed forces pay tribute to those who have suffered or died at war. (Photo by Max Mumby/Indigo/Getty Images)