AMSTERDAM, NETHERLANDS - SEPTEMBER 15: King Willem-Alexander of The Netherlands and Queen Maxima of The Netherlands attend the premiere of the ballet performance 'Ode to the Master' at the National Opera & Ballet on September 15, 2017 in Amsterdam, Netherlands. The National ballet brings a tribute to the permanent choreographer Hans van Manen, on the occasion of his 85th birthday. (Photo by Patrick van Katwijk/Getty Images)
