King Willem Alexander Of The Netherlands Attends Prinsjesdag (Prince's Day)

THE HAGUE, NETHERLANDS - SEPTEMBER 17: Prince Constantijn of The Netherlands, Princess Laurentien of The Netherlands, Queen Maxima of The Netherlands and King Willem-Alexander of The Netherlands wave from the Noordeinde Palace balcony during celebrations for Prinsjesdag (Prince's Day) on September 17, 2013 in The Hague, Netherlands. (Photo by Michel Porro/Getty Images)