Sienna Miller has reportedly been dumped from the role of “Maid Marian” in an upcoming remake of Robin Hood after the film’s producers developed concerns that the petite star would make out-of-shape co-star Russell Crowe “look bad” during intimate scenes.

The man-eating 26-year-old actress was reportedly banished from the cast of Nottingham after being deemed too thin for the part, squealing movie insiders say.

Crowe, 44, has not shed the four stone he gained for his role in the recent Body of Lies, where he played a former journalist.

An insider told the New York Post on Sunday: “It is a mess. Russell never lost the weight he put on for Body of Evidence and so the love scenes between him and Sienna would have been laughable. He’s so old and fat and she’s so young and gorgeous.”

The source added, “Word is that producers are “looking for an older, plumper actress to play the role so Crowe doesn’t look like a paunchy grandpa. Someone in her late 30s or early 40s.”