Opening Monaco’s season every spring, this is the most glamorous invite on the principality’s social calendar. Royally hosted since 1954, this charity gala draws a guest list that includes royals and A-listers. Under the presidency of Prince Albert II of Monaco and his sister Princess Caroline de Hanovre, the Rose Ball takes place in the Salles des Etoiles of the Sporting Monte-Carlo. Ticket sales fund the Princess Grace Foundation, giving humanitarian aid to disabled children around the world.