It was announced this morning by the Cour Grand-Ducale de Luxembourg that His Royal Highness Hereditary Grand Duke Guillaume and his lovely fiancée, Comtesse Stéphanie de Lannoy, will marry on Saturday, October 20, 2012.
The location of the ceremony has yet to be announced, however, there is a 99.9% chance that the newly engaged couple will marry at the beautiful Cathédrale Notre-Dame in Luxembourg City.
Finally, the Luxembourg newspaper, Wort, has released photos of a young Comtesse Stéphanie de Lannoy which you can view here.
Source and coat of arms courtesy of the Cour Grand-Ducale de Luxembourg