Selena Gomez vs. Cara Delevingne\nVote for the best dressed star of the week here.\nCara Delevingne in Burberry. Photo by Getty Images\nSelena Gomez in Marc Jacobs. Photo by Getty Images.\nNatalie Portman in Dior. Photo by Getty Images.\nLupita Nyong'o in Alessandra Rich. Photo by Getty Images\nAlexa Chung in Gucci. Courtesy of Gucci.\nClaire Danes in Prada. Courtesy of Prada.\nZoe Saldana in Altuzarra. Photo by Stefanie Keenan/Getty Images for Barneys New York.