The Dutch royal family were out in full force on Saturday for King Willem-Alexander's 57th birthday, and Crown Princess Catharina-Amalia shared a sweet moment with her father while out in the crowds.

Princess Catharina-Amalia is the eldest child of King Willem-Alexander and Queen Máxima of the Netherlands, born in 2003. She became heir apparent when her father ascended the throne in 2013.

See Photos from Crown Prince Hussein and Princess Rajwa ... including a rare tiara moment for the future queen of the Netherlands, Princess Catharina-Amalia. In just her second time stepping ...

The daughter of Crown Prince Haakon and Crown Princess Mette-Marit will help host the President of Iceland next month, but ...

The Crown costume team must have had the most fun with Episode 6 "Terra Nullius," which recreated Diana's outfits from the Prince and Princess of Wales' 1983 tour of Australia and New Zealand.Some ...

Princess Diana's '80s and '90s style was recreated on Netflix's The Crown — including some of her most iconic looks Stephanie Petit is a Royals Editor, Writer and Reporter at PEOPLE.

Christian's grandmother, Queen Margrethe, abdicated after a 52-year reign. The Crown Prince has three younger siblings – Princess Isabella, Prince Vincent and Princess Josephine.