BRUSSELS, BELGIUM - FEBRUARY 20: Prince Lorenz, Prince Joachim, Princess Astrid, Princess Louisa-Maria and Prince Amedeo attend a photocall to celebrate Prince Amedeo's 18th birthday on February 20, 2004 in Brussels, Belgium. (Photo by Eric Vidal-Pool/Getty Images)

BRUSSELS, BELGIUM - FEBRUARY 20:  Prince Lorenz, Prince Joachim, Princess Astrid, Princess Louisa-Maria and Prince Amedeo attend a photocall to celebrate Prince Amedeo's 18th birthday on February 20, 2004 in Brussels, Belgium. (Photo by Eric Vidal-Pool/Getty Images)