Sienna Miller, James Purefoy and Jessica Adams attend Eva Cavalli's birthday party at One Mayfair on October 9, 2015 in London, England.
{"Image ImageDescription": "LONDON, ENGLAND - OCTOBER 09:  (L to R) Sienna Miller, James Purefoy and Jessica Adams attend Eva Cavalli's birthday party at One Mayfair on October 9, 2015 in London, England.  (Photo by David M. Benett/Dave Benett/Getty Images for Eva Cavalli)", "Image Copyright": "2015 David M. Benett"}