King Willem-Alexander Of The Netherlands Celebrates His Birthday With Family And Friends In The Hague [Getty Images]

THE HAGUE, NETHERLANDS - APRIL 29: Princess Beatrix of The Netherlands arrives at Palace Noordeinde for an private birthday party for King Willem-Alexander in the Royal Stables on April 29, 2017 in The Hague, Netherlands. (Photo by Patrick van Katwijk/Getty Images) — see more

THE HAGUE, NETHERLANDS - APRIL 29: Princess Beatrix of The Netherlands arrives at Palace Noordeinde for an private birthday party for King Willem-Alexander in the Royal Stables on April 29, 2017 in The Hague, Netherlands. (Photo by Patrick van Katwijk/Getty Images)

Getty Images Entertainment Patrick van Katwijk