The Belgian Royal Family Attend The Concert For The National Day In Brussels [Getty Images]

BRUSSELS, BELGIUM - JULY 20: Princess Astrid of Belgium on crutches and Prince Lorenz of Belgium arrive at Bozar, the Centre for Fine Arts to attend the concert the evening before the Belgian National day on July 20, 2017 in Brussels, Belgium. (Photo by Patrick van Katwijk/Getty Images)

Getty Images Entertainment Patrick van Katwijk