Sassy British starlet Sienna Miller took to the stage last night in her debut Broadway performance. and the reviews are in. Starring in Patrich Marbers adaptation of After Miss Julie, Sienna plays the title role, as a rich young woman looking after her fathers estate. Something of a theatre fledgling, Sienna was last seen treading the boards when she played Celia in a London production of As You Like It back in 2005. After a recent string of bad press in the U.S., we were unsure what to expect this time round. Reports suggest she really held her own. A Reuters review described her performance as emotionally charged, while the New York Times gives her points for courage, for tackling what is known to be a very difficult role.