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