ZWOLLE, NETHERLANDS - APRIL 27: Crown Princess Catharina-Amalia of The Netherlands attends celebrations marking the King's 49th birthday on King's Day on April 27, 2016 in Zwolle, Netherlands. (Photo by Michel Porro/WireImage)
ZWOLLE, NETHERLANDS - APRIL 27: Crown Princess Catharina-Amalia of The Netherlands attends celebrations marking the King's 49th birthday on King's Day on April 27, 2016 in Zwolle, Netherlands. (Photo by Michel Porro/WireImage)