AMSTERDAM, NETHERLANDS - APRIL 26: King Willem-Alexander, Queen Maxima, Princess Alexia, Princess Catharina-Amalia and Princess Alexia attend King's Day on April 26, 2014 in Amsterdam, Netherlands. (Photo by Michel Porro/Getty Images)
AMSTERDAM, NETHERLANDS - APRIL 26: King Willem-Alexander, Queen Maxima, Princess Alexia, Princess Catharina-Amalia and Princess Alexia attend King's Day on April 26, 2014 in Amsterdam, Netherlands. (Photo by Michel Porro/Getty Images)