Demi Moore will play feminist icon Gloria Steinem in Lovelace, a biopic about porn star-turned-activist Linda Lovelace, according to The Hollywood Reporter.
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Adam Brody and Eric Roberts have also joined the film, which stars Amanda Seyfried as Lovelace.
Moore will have a small part in the movie. Steinem co-founded Ms. magazine in the '70s and wrote the article "The Real Linda Lovelace," a profile about the Deep Throat star's abusive relationship with her husband and pornographer Chuck Traynor, who will be played by Peter Sarsgaard.
Brody will play Lovelace's Deep Throat co-star Harry Reems, and Roberts will play lie-detector expert Nat Laurendi.
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The cast also includes Hank Azaria as Deep Throat director Jerry Damiano, Bobby Cannavale, Sharon Stone, Chris Noth, Juno Temple, Wes Bentley and Robert Patrick. James Franco is reportedly in talks to cameo as Hugh Hefner.
Lovelace is in production and will be released later this year. A second movie on Lovelace is also in the works and scheduled for release next year.