LONDON, ENGLAND - SEPTEMBER 21:  (L-R) Sienna Miller and Savannah Miller appear with their mother Jo (C) backstage after Savannah's show Twenty8Twelve during London Fashion Week Spring/Summer 2010 on September 21, 2009 in London, England. Getty Images logo Getty Images 2 months ago

LONDON, ENGLAND - SEPTEMBER 21: (L-R) Sienna Miller and Savannah Miller appear with their mother Jo (C) backstage after Savannah's show Twenty8Twelve during London Fashion Week Spring/Summer 2010 on September 21, 2009 in London, England.