The London 2014 Stella McCartney Green Carpet Collection [Getty Images]

LONDON, ENGLAND - SEPTEMBER 14: Poppy Delevingne attends The London 2014 Stella McCartney Green Carpet Collection during London Fashion Week at The Royal British Institute on September 14, 2014 in London, England. (Photo by David M. Benett/Getty Images for Eco-Age/Green Carpet Collection)

Getty Images Entertainment David M. Benett