AMSTERDAM, NETHERLANDS - APRIL 28: King Willem-Alexander and Queen Maxima of The Netherlands pose for a group picture with their guests after the dinner for 150 Dutch people to celebrate the king's 50th birthday in the Royal Palace on April 28, 2017 in Amsterdam, Netherlands. After the dinner the King and the Queen will open the Royal Palace for 50 hours with an exhibition that gives an overview of the Netherlands in the last 50 years. (Photo by Remko de Waal/POOL/Getty Images)
