Mandatory Credit: Photo by Robin Utrecht/Shutterstock (11906090j) Queen Maxima King Willem-Alexander and Princess Amalia, Princess Ariane, Princess Alexia and Princess Beatrix arrive for the celebration of the 50th birthday of Queen, who will turn 50 on May 17. Queen Maxima lives a life full of music in Carre. Queen Maxima 50th Birthday celebration, Amsterdam, The Netherlands - 15 May 2021