Last Summer in the Hamptons 1995 on netflix

Helena Mora, the head of an eccentric theatrical family, has decided to sell her large estate in the Hamptons because of her recent money troubles. Before she completes the sale, she wants to have one last gathering of family and friends, with dramatic performances. Bringing everyone together, though, creates rivalries and tension, especially for Oona, a temperamental but successful movie actress who seeks the approval of her creative peers.