Stella McCartney: Star of the Green Carpet Challenge (+Video)Stella McCartney unveils her upcycled eco capsule collection for the 2014 Green Carpet Challenge, where glamour meets ethical fashion on the red carpet.SaveMark Us Preferred on GooglePrintStella McCartney unveils her upcycled eco capsule collection for the Green Carpet Challenge 2014Chere Di Boscio9/25/2014|Updated: 6/24/2015Livia Firth founder of the Green Carpet Challenge with her husband Hollywood actor Colin FirthWe had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.