AMSTERDAM, NETHERLANDS - JUNE 4: King Willem-Alexander and Queen Maxima of The Netherlands attend the opening of Holland Festival on June 4 2016 in Amsterdam Netherlands. (Photo by Michel Porro - Netherlands Royal Pool/Getty Images)
AMSTERDAM, NETHERLANDS - JUNE 4: King Willem-Alexander and Queen Maxima of The Netherlands attend the opening of Holland Festival on June 4 2016 in Amsterdam Netherlands. (Photo by Michel Porro - Netherlands Royal Pool/Getty Images)