Thesp will play Anastasia Steele's mother
Dakota Johnson and Charlie Hunnam are set to star, with Sam Taylor-Johnson helming the pic.
Ehle will play Anastasia Steele’s mother in the film.
Michael DeLuca and Dana Brunetti are producing. Kelly Marcel penned the script.
Ehle was most recently seen in Sony’s “Zero Dark Thirty.” She is repped by ICM Partners.
Deadline Hollywood first reported the news.