Willem-Alexander became the first Dutch king in more than 120 years on Tuesday as his mother, Queen Beatrix abdicated the throne, ending 33 years as the country's monarch.
The 75-year-old monarch handed over power in a constitutionally ordained ceremony in the Mozes Hall of the royal palace in Amsterdam. The transfer became official as she signed the "instrument of abdication" that means she will now be known as Princess Beatrix.
Cheers erupted from crowds gathered outside the palace who were watching proceedings on a big screen as the queen signed the document. CNN's Max Foster reported that many in the Netherlands had been partying well into the night.FULL STORY