For the first time since the late 19th century, the Netherlands has a reigning king. On April 30, 2013, at the Neue Kerk in Amsterdam, Willem-Alexander, the forty-six-year old eldest son of the former Queen Beatrix, was inaugurated as King of the Netherlands in a glittering ceremony attended by numerous dignitaries and government officials, including members of various royal families. Princess Beatrix, who had abdicated earlier in the day, was present as her son, with an ermine mantle over his shoulders, formally assumed the throne. At his side was his wife, Queen Maxima, looking regal and elegant in a blue gown and tiara. Their daughters, Princess Catharina-Amalia, Princess Alexia, and Princess Ariane were likewise dressed in blue like their mother. Photos by Getty Images.