LUXEMBOURG - OCTOBER 19: Archi Duke Christian of Austria and Archi Duchess Marie-Astrid of Austria attend the Gala dinner for the wedding of Prince Guillaume Of Luxembourg and Stephanie de Lannoy at the Grand-ducal Palace on October 19, 2012 in Luxembourg, Luxembourg. The 30-year-old hereditary Grand Duke of Luxembourg is the last hereditary Prince in Europe to get married, marrying his 28-year old Belgian Countess bride in a lavish 2-day ceremony. (Photo by Sean Gallup/Getty Images)
