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Prince Albert II and Princess Charlene of Monaco were joined by a plethora of celebrities, including Helen Mirren, Kate Beckinsale, and Rebel Wilson, as they hosted the annual Monte-Carlo Gala on the Terrace of the Monte Carlo Casino on September 24th. Hosted by the Prince Albert II of Monaco Foundation, the Monte-Carlo Gala is a major fundraising event in the heart of Monte Carlo, supports its worldwide initiatives in favour of a sustainable planet.