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THE HAGUE, NETHERLANDS - AUGUST 31: Princess Beatrix of The Netherlands leaves the Zuiderstrandtheater after the dance event 'Free to Move' on August 31, 2017 in The Hague, Netherlands. The event, a collaboration between Holland Dance and the Princess Beatrix Muscle foundation, was held to benefit the fight against muscular diseases. (Photo by Patrick van Katwijk/Getty Images)

THE HAGUE, NETHERLANDS - AUGUST 31: Princess Beatrix of The Netherlands leaves the Zuiderstrandtheater after the dance event 'Free to Move' on August 31, 2017 in The Hague, Netherlands. The event, a collaboration between Holland Dance and the Princess Beatrix Muscle foundation, was held to benefit the fight against muscular diseases. (Photo by Patrick van Katwijk/Getty Images)