Woody Allen's 51st directorial is set to star Christoph Waltz and Gina Gershon, and will go on floors in Spain from July. 

Bankrolled by MediaPro, the film is tentatively titled WASP2019, and will also star Wallace Shawn, Sergi Lopez, Louis Garrel, and Elena Anaya. 

Described as a romantic comedy, the film follows a married American couple who attend the San Sebastian film festival only to fall in love with different people.

"She has an affair with a brilliant director of French cinema and he falls in love with a beautiful Spanish woman living in the city. A romantic comedy that is solved in a funny way," the studio said.

The project will mark the fourth collaboration between the studio and the filmmaker after Midnight in Paris, You Will Meet a Tall Dark Stranger and Vicky Cristina Barcelona.