Fresh from joining Sabrina Carpenter during the pop star’s headliner set at Coachella, Geena Davis has lined up a new night in the spotlight by joining the amfAR Gala Cannes as host. Davis will share the stage with previously announced performers Robbie Williams , Zara Larsson and Pink Pantheress at the iconic Hôtel du Cap-Eden-Roc on May 21. The glitzy fundraiser, which supports the organization’s biomedical research program, always comes at the tail end of the Cannes Film Festival . “We could not be more excited and grateful to have Geena Davis returning to amfAR Gala Cannes after all these years, along with such a stellar cast of dynamic performers. To have such a special group of incredibly talented artists supporting our mission is truly an honor,” said amfAR CEO Kyle Clifford.…