Eric Roberts, Demi Moore and Adam Brody have joined the cast of “Lovelace”, the porn star bio with Amanda Seyfried lending her throat to the lead role.

Brody (“The OC”, “Scream 4″) will play Harry Reems, Linda Lovelace’s friend and co-star in infamous porno “Deep Throat”; “Dark Knight” star Roberts is lie detector expert Nat Laurendi and former Mrs Kutcher, Demi Moore (“Bobby”, “Striptease”) is author-activist Gloria Steinem.

The film, also starring Peter Sarsgaard as Lovelace’s abusive husband Chuck Traynor and co-starring Hank Azaria, Bobby Cannavale, Chris Noth, Sharon Stone and Robert Patrick, will be directed by “Howl” helmers Jeffrey Friedman and Rob Epstein.

To read a script review, including details on some of the characters listed above, click here.