Birthday Queen Maxima. Queen Maxima will turn 49 on 17 May. Maxima Zorreguieta is the wife of King Willem-Alexander of the Netherlands and mother of Princess Amalia, Princess Alexia and Princess Ariane. (Archive Image). 15 May 2020 Pictured: Birthday Queen Maxima. Queen Maxima will turn 49 on 17 May. Maxima Zorreguieta is the wife of King Willem-Alexander of the Netherlands and mother of Princess Amalia, Princess Alexia and Princess Ariane. (Archive Image). Photo credit: MEGA TheMegaAgency.com +1 888 505 6342