Hereditary Grand Duke Guillaume was married to the Belgian countess Stéphanie de Lannoy at the City Hall in Luxembourg on Friday 19 October 2012. A gala dinner took place at the Grand Ducal palace in the evening.
The religious ceremony took place in the Notre-Dame Cathedral today at 11 p.m., followed by a reception at the Grand Ducal palace. I was only able to follow the events on the Norwegian TV channel NRK1 up to bride's arrival at the cathedral. The weather was great and the crowd was impressive. The TV commentators could have been more informative when commenting on all the royals arriving for the wedding, though.
More details about the wedding and photos can be found at the official website, Gouvernement.lu and the local newspaper Wort.lu (German and English versions). See also NettyRoyal and Luxarazzi.
Countess Stéphanie de Lannoy became Princess of Luxembourg upon the civil wedding on Friday. The Grand Duke will soon issue a decree making her Hereditary Grand Duchess. As mentioned earlier, the new member of the Grand Ducal family has obtained Luxembourgian nationality by act 10 October 2012, published in Mémorial 15 October 2012 (no. 221, p. 3014). The preparatory works can be read here.