GRONINGEN, NETHERLANDS - APRIL 27: King Willem-Alexander of The Netherlands, Queen Maxima of The Netherlands, attend the Kingsday celebration on April 27, 2018 in Groningen, Netherlands. (Photo by Patrick van Katwijk/Getty Images)
GRONINGEN, NETHERLANDS - APRIL 27: King Willem-Alexander of The Netherlands, Queen Maxima of The Netherlands, attend the Kingsday celebration on April 27, 2018 in Groningen, Netherlands. (Photo by Patrick van Katwijk/Getty Images)