IESB got a couple shots of Sienna Miller in costume as the bloodied Baroness in Stephen Sommer’s live-action GI Joe movie. Taken on the streets of Prague, where G.I. Joe is currently filming, these photos feature Sienna Miller in skin tight black leather toting a big gun. The Baroness serves as the COBRA Organization’s intelligence officer and lieutenant to Cobra Commander. In both comic and cartoon incarnations, the ruthless femme fatale has had romantic relationships with Destro. G.I. Joe hits theaters on August 7th 2009.