Biopics are supposed to illuminate the lives and personalities of their subjects, not cast them in murkier waters.

In the case of Factory Girl, the most unfortunate has happened. Even though the life of the famous 1960s model Edie Sedgwick is a fascinating one, the movie's disconnected narrative and over-enthusiastic direction by George Hickenlooper only serve to complicate and confuse our understanding of this one-time It-girl.

About the only saving grace of the movie is Sienna Miller, who portrayal of the lived-fast, died-young glamour girl is both convincing and compelling. It could not have been easy playing Edie: She was abused by her father, locked up in mental hospitals, used by Andy Warhol (Guy Pearce) for art and later abandoned as a drug addict.

But Sienna makes Edie as sympathetic as she possibly could within this shapeless mess of a film.