Emmy Award-winning Baby Reindeer star Jessica Gunning has been cast to play The Mamas & The Papas singer Cass Elliot in the upcoming movie My Mama Cass.
The biopic will be based on the bestselling memoir My Mama, Cass, written by Elliot's daughter, Owen Elliot-Kugell, with the book being adapted by novelist and screenwriter Emma Forrest.