HIH Princess Napoleon Bonaparte

Here’s an interesting story:

At an exhibition in Paris’ Grand Palais entitled Les Trésors Engloutis D’Egypt aka The Sunken Treasures of Egypt, there was a meeting between two representatives of the former Imperial Houses of France and Persia: HIH Princess Napoleon Bonaparte and HIM Shahbanou Farah Pahlavi of Iran. The Former reigning Empress of Iran and the descendant of the French Emperor were the VIP visitors of this exhibition that opened on December 9th 2006.

I confess to not being entirely sure who HIH Princess Napoleon Bonaparte actually is. Judging by the photograph, I am guessing she is either the twin sister, ex-wife or current wife of Charles Napoleon Bonaparte, aka Napoleon VII. Can anyone clarify that?