EXCLUSIVE: Naomi Watts will star alongside Susan Sarandon and Elle Fanning in the comedic drama that IM Global is bringing to the AFM.

Three Generations charts the interwoven lives of a New York teen transitioning from female to male, her single mother and lesbian music manager grandmother.

Gaby Dellal will direct from a screenplay by Nikole Beckwith. ICM Partners represents US rights.

Big Beach co-founders Peter Saraf and Marc Turtletaub will produce with Dorothy Berwin of InFilm Productions. 

Watts, currently shooting Demolition in New York for Jean-Marc Vallée, will serve as executive producer alongside Leah Holzer and Daniele Melia of Big Beach and Peter Pastorelli.