AMSTERDAM, NETHERLANDS - JUNE 12: HRH Princess Maxima and HRH Prince Willem Alexander leave the Christening of baby girl Catharina-Amalia, daughter of Dutch Crown Prince Willem Alexander and Princess Maxima at the Hague on June 12, 2004 in Amsterdam, The Netherlands. Her parents announced the birth of their daughter Princess Amalia - who is the heir to the Dutch throne - on December 7, 2003. (Photo by Steve Finn/Getty Images)
Crown Prince Willem-Alexander, Crown Princess Maxima & Daughters Catharina-Amalia & Alexia Attend The Christening Of Prince Constantijn & Princess Laurentien Of The Netherlands' Daughter Leonore, At The Palais Het Loo National Museum In Apeldoorn. . (Photo by Antony Jones/UK Press via Getty Images)
THE HAGUE, NETHERLANDS - JUNE 26: Dutch Princess Maxima (L) carries Princess Ariane as she walks with Princess Alexia (C), Crown Prince Willem Alexander (2R) and Princess Catharina-Amalia (R) on June 26, 2007 in The Hague, Netherlands. Princess Alexia is celebrating her second birthday today. (Photo by Michel Porro/Getty Images)
WASSENAAR, NETHERLANDS - JULY 10: (L-R) Princess Ariane, King Willem-Alexander, Princess Amalia, Queen Maxima, and Princess Alexia of The Netherlands and one of their dogs pose for pictures on July 10, 2015 in Wassenaar, Netherlands. (Photo by Freek van den Bergh/Getty Images)
LECH, AUSTRIA - FEBRUARY 22: (L-R) Princess Alexia, Dutch King Willem-Alexander, Princess Amalia, Queen Maxima and Princess Ariane pose for a picture during the annual photo call on February 22, 2016 in Lech, Austria. (Photo by Jan Hetfleisch/WireImage)
