Casiraghi regularly attends important social events in Monaco related to the Monegasque Princely Family, such as National Day, the Rose Ball, and the Formula One competition Monaco Grand Prix. In 2011, Casiraghi and his siblings Charlotte and Pierre hosted Monaco's annual Rose Ball, in the absence of Prince Albert, Princess Caroline and Princess Stéphanie who were mourning the sudden death of their aunt Princess Antoinette, Baroness of Massy, a few days earlier. Casiraghi gave the speech at the start of the event. The same year, he attended the wedding of his uncle Prince Albert and Charlene Wittstock, which took place on 1 and 2 July 2011.