Amber Heard is being sued over claims she cut her own sex scenes from the finished version of London Fields.
The Daily Telegraph reports the actor is being sued for $10m (£8m) by the film's producers, who say she "conspired" with director Mathew Cullen to remove scenes in which she was naked.
Chris Hanley and Jordan Gertner reportedly filed a 24-page lawsuit in Los Angeles on Monday over Heard's "refusal to comply with her contractual obligations".
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The action accuses her of "failing to render acting services in conformance with the shooting script" and "conspiring with Cullen to make unauthorised, material changes to the shooting script".
It continues: "Heard understood the nature of the role... and the tenor of the screenplay, which was salacious, provocative, and contained nude scenes."
Despite shooting beginning in 2013, the film, an adaptation of Martin Amis's 1989 black-comedy novel, has still not been released. Its premiere at the Toronto Film Festival last year was cancelled when it became clear Heard would not attend.
The actor's relationship with husband Johnny Depp broke down during the production, when he accused her of becoming too close to co-star Billy Bob Thornton. Thornton denied the claim.
According to the Telegraph, the few critics who have seen London Fields have not been complimentary.
This lawsuit is the latest of three relating to the film. According to the Daily Mail, Cullen launched a $1m action after the cancelled premiere, claiming the producers had mangled his work.
He said Hanley and Gertner made such radical changes he no longer recognised the film as his own. He also alleged he had never been paid.
The producers then opened their own action against Cullen, accusing him of breach of contract and going massively over budget during the shoot.