Sienna Rose Miller (born December 28, 1981) is an American-born English actress,model and fashion designer. Sienna gave birth to herand boyfriend Tom Sturridge’s first child, daughter Marlowe Ottoline Layng, on July 8th 2012. She is best known for her roles in Layer Cake, Alfie, Factory Girl, The Edge of Love and G.I. Joe: The Rise of Cobra. She co-founded thesuccessful Twenty8Twelve fashion line with her sister Savannah Miller.