actor and her sister attend the celebration
{"Image ImageDescription": "NEW YORK - SEPTEMBER 10:  Actress Sienna Miller (R) and her sister Savannah Miller attend the Intermix celebration of Fashion's Night Out at Intermix Soho on September 10, 2009 in New York City.  (Photo by JP Yim/Getty Images for Intermix)", "Image Copyright": "2009 Getty Images", "Image XResolution": "300", "Image YResolution": "300"}