Actress Sienna Miller has sparked controversy yet again by revealing she takes drugs because "they're fun". Last year (06) the outspoken 25-year-old upset Pittsburgh, Pennsylvania residents after drunkenly calling their city "S**tsburgh" during an interview - but her candid drugs comments look likely to cause an even bigger furore around the globe. Miller, who plays Edie Sedgwick in her latest movie FACTORY GIRL, confessed she took morphine to research the role of the New York socialite who died of an overdose, and understands why Andy Warhol's muse was drawn to illegal substances. She says, "They're f**kloads of fun. "If I had a drug of choice it would be magic mushrooms."