1 / 45

Guests observe a minute of silence to pay tribute to the victims of Bastille Day truck attack in Nice during the Red Cross Gala charity event in Monte Carlo

Monaoc's Prince Albert II (L Middle) stands across from Princess Charlene to observe a minute of silence with guests as they pay tribute to the victims of Bastille Day truck attack in Nice during the Red Cross Gala charity event in Monte Carlo, Monaco, July 23, 2016. REUTERS/Jean-Pierre Amet

Prince Albert, Princess Charlene of Monaco

Prince Albert II of Monaco married Charlene Wittstock in July. The prince is one of three children of Prince Rainier and his late wife, American actress Grace Kelly.