BEST DRESSEDSelena Gomez vs. Cara DelevingneVote for the best dressed star of the week here.by W Magazine09.27.151Cara Delevingne in Burberry. Photo by Getty Images2Selena Gomez in Marc Jacobs. Photo by Getty Images.3Natalie Portman in Dior. Photo by Getty Images.4Lupita Nyong’o in Alessandra Rich. Photo by Getty Images5Alexa Chung in Gucci. Courtesy of Gucci.6Claire Danes in Prada. Courtesy of Prada.7Zoe Saldana in Altuzarra. Photo by Stefanie Keenan/Getty Images for Barneys New York.