King Willem Alexander, Queen Maxima and their daughters Amalia (3L), Ariane (2R) and Alexia (2L) pose in Tilburg, on April 27 2017, as they arrive to celebrate the King's day, marking the birth of King Willem-Alexander. In the Netherlands, King Willem-Alexander's 50th birthday is celebrated during the traditional Kingsday. / AFP PHOTO / ANP / Lex van Lieshout / Netherlands OUT (Photo credit should read LEX VAN LIESHOUT/AFP/Getty Images)
