Charlotte Gainsbourg (“Antichrist”), Edgar Ramirez (“Emilia Pérez”) and Annabelle Wallis (“The Mummy”) are set to star in Argyris Papadimitropoulos’ new feature “Oh, How Fun!,” a satirical comedy set on the posh Greek Island of Antiparos. Lucky Number has boarded international sales and CAA Media Finance co-represents U.S. rights. The sexy project starts shooting later this year and will be presented to buyers at the Cannes Film Market . ‘Oh, How Fun!” follows the wealthy British Skidmore family and their privileged guests vacationing in a pristine Greek island villa where days unfold in a haze of “languid afternoons, exquisitely plated meals, infinity pools, designer kaftans, and a cherished tradition of… pranks!” But when the group’s “master prank” goes spectacularly wrong, the holiday spirals into chaos.…