Sienna Rose Miller (born December 28, 1981) is an English actress, model, and fashion designer, best known for her roles in Layer Cake, Alfie, Factory Girl, The Edge of Love and G.I. Joe: The Rise of Cobra.Born in New York City, Miller and her family moved to London when she was just over a year old. Her father, Edwin Miller, is an American banker turned dealer of Chinese art. Miller has a sister, Savannah, two half-brothers, Charles and Stephen, and a stepsister, Natasha Corrett (the daughter of her father's second wife, Kelly Hoppen). Miller attended Heathfield St Mary's School, a boarding school in Ascot, Berkshire, and later studied for a year at the Lee Strasberg Institute in New York City. She carries both British and American passports, and acquired her first driving licence in the U.S. Virgin Islands, since it was easy to qualify, which allowed her to drive in both the U.S. and UK
In 2001, she made her film début with South Kensington, with Rupert Everett and Elle Macpherson and later had a recurring role in the television drama series Keen Eddie. In 2004 Miller had a supporting roles in the remake Alfie with Jude Law and in Layer Cake. In 2005, Miller played the female lead opposite Heath Ledger in the period comedy drama, Casanova, followed by the role of 1960s socialite and Andy Warhol's muse Edie Sedgwick in Factory Girl, which opened December 29, 2006. In 2007, Miller had a small role in Matthew Vaughn's adaption Stardust and played a starlet to Steve Buscemi's reporter in Interview, another remake. Later in 2007, she portrayed an undead bride opposite James Franco in Camille In 2008, Miller appeared in the film version of writer Michael Chabon's novel, The Mysteries of Pittsburgh and filmed The Edge of Love, with friend Keira Knightley, a biopic of Dylan Thomas in which she plays his wife Caitlin. She appeared in the 2009 live-action film adaptation of the comic book and cartoon G.I. Joe, G.I. Joe: The Rise of Cobra, playing The Baroness. The film grossed $54 million in the United States during its opening weekend. She appeared in the film Hippie Hippie Shake a Working Title production which starred Cillian Murphy and played the title role in Patrick Marber's After Miss Julie on Broadway. She is currently starring as Patricia in the London production of Flare Path at the Theatre Royal Haymarket.In 2006, it was announced that Miller would design a fashion capsule for Pepe Jeans; the project was later expanded to become a complete fashion label. Called Twenty8Twelve, it gets its name from Miller's date of birth and is financially backed by Pepe Jeans. The collection, which Miller designed with her sister Savannah, a professional fashion designer, launched in September 2007.
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