LONDON, ENGLAND - OCTOBER 09: Cara Delevingne (L) and Kendall Jenner 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)
LONDON, ENGLAND - OCTOBER 09: Cara Delevingne (L) and Kendall Jenner 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)