Sienna Miller is an American-British actress and model, born on December 28, 1981, in New York City and raised in London. She began her career as a model before transitioning to acting, gaining recognition for her roles in films like "Layer Cake" (2004) and "Alfie" (2004). Miller has also appeared in "Factory Girl" (2006), "The Edge of Love" (2008), and "G.I. Joe: The Rise of Cobra" (2009). She received acclaim for her performance in the television film "The Girl" (2012), earning nominations for a BAFTA and a Golden Globe. Miller continues to be a prominent figure in both film and theater, known for her versatility and talent.