The royal sisters gathered on the balcony of Noordeinde Palace to wave to crowds below alongside their parents King Willem-Alexander and Queen Maxima. It is believed the King and Queen’s youngest daughter, Crown Princess Ariane, 17, was unable to attend as she is studying at the Italian school she attends, UWC Adriatic.
Catharina-Amalia was born in 2003 and is the eldest child of the King and Queen of the Netherlands. In…

