By | October 02 2012 6:16 PM

Sienna Miller may soon prove herself as an actress. The 30-year-old, known more for her personal tribulations than her film roles, is set to star in the HBO film “The Girl,” about the relationship between Alfred Hitchcock and Tippi Hedren, one of his famed muses. Miller plays Hedren in a role that — based on the trailer — appears more challenging than the parts she typically plays.