SustainabilityThe 2014 Green Carpet ChallengeBy Emma Elwick-BatesPhotography by Kevin TachmanSeptember 14, 2014Save StorySave this storySave StorySave this storyExpandPhoto: Richard Young1/31Natalie Massenet, Anna Wintour, Stella McCartney, and Livia FirthExpand2/31Drew Barrymore and Gucci WestmanExpand3/31Nancy Shevell and Sir Paul McCartneyExpand4/31Samuel L. JacksonExpand5/31M.I.A.TopicsStella McCartneyLivia FirthAnna WintourNatalie MassenetSustainability