Chloe Sevigny has signed on to join the Lovelace cast a day after Demi Moore quit the project to battle health issues.
The actress will play a journalist in the biopic about porn star-turned-activist Linda Lovelace.
She joins Amanda Seyfried, who is portraying the title character in the film, Peter Sarsgaard, Hank Azaria, Adam Brody and Sharon Stone, among others.
Moore, who was cast as feminist icon Gloria Steinem, pulled out of the project on Tuesday after entering a treatment centre for exhaustion and to "improve her overall health".
The film's producer, Patrick Muldoon, has previously revealed that Mamma Mia! star Seyfried won't be shy shooting the movie as she will be stripping off for full-frontal nude scenes.
Muldoon said: "It's very risque and there will be lots of nakedness in the movie, especially for Seyfried. It's a new thing for her."