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The lady is a vamp: Sienna goes to the dark side on the set of her latest film
Updated 10:43am on 26 May 2008
Clearly relishing her role as a villain, Sienna Miller has gone to the dark side.
The actress, famed for her sun-kissed blonde locks, vamped up her look with a poker straight jet-black mane on the set of her new film GI Joe.
However, fans of Sienna's style can breathe a sigh of relief - the 26-year-old's gothic look is created with a cleverly fitted wig.
Sienna's villainous role has literally gone to her head with a new gothic hairstyle
In her first part as a "baddie" the soon-to-be Mrs Rhys Ifans has been spotted wearing a range of tight black costumes.
Showing off a new muscled physique and form-fitting leather, her role is clearly a racy one.
Hardworking Sienna has been training intensively since winning the part and has put on a stone to achieve the sculpted form of her character "The Baroness".
Due to be released in 2009, the film also stars Brendan Fraser and Dennis Quaid.
