Bob Dylan sues over new Sienna pic
He is claiming that the character of Billy Quinn, played by Hayden Christensen, is based directly on himself, while the producers maintain that the role is a "composite", Studio Briefing reports.
The film, which does not yet have a release date in the UK, features Sienna Miller as Edie Sedgwick, who moved to New York in 1965 and became one of Andy Warhol's muses.
Although Ms Miller often features in the news due to her high-profile relationship with fellow actor Jude Law, the actress has built up a varied CV of films since her debut in 2001.
Her first major role was in gangster thriller Layer Cake, where she starred opposite the latest James Bond, Daniel Craig.
The same year, she starred in the remake of the classic Alfie and followed this with Casanova, appearing on-screen with Australian actor Heath Ledger.
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