First Day Of School For Belgium Royal Family Children In Brussels [Getty Images]

BRUSSELS, BELGIUM - SEPTEMBER 01: King Philippe of Belgium bring his children Princess Elisabeth of Belgium, Prince Gabriel of Belgium and Princess Eleonore of Belgium to school at the Sint-Jan-Berchmanscollege after the summer vacation on September 1, 2017 in Brussels, Belgium. (Photo by Patrick van Katwijk/Getty Images)

Getty Images Entertainment Patrick van Katwijk