Steven Klein photographed Jessica Chastain for the November cover of W Magazine, styling by Edward Enninful. Hair and make up by Sammy Mourabit and Shay Ashual. (source)
Click here to view last year covers featuring Daniel Van Der Deen, Daria Werbowy, Kate Moss, Lara Stone, Raquel Zimmermann, Saskia De Brauw, Mariacarla Boscono, Steve Milatos, Suvi Koponen, Riley Montana, Karmen Pedaru and Anna Ewers, here to view 2013 cover featuring Katy Perry, here to view 2012 covers featuring Keira Knightley, Mia Wasikowska, Rooney Mara, and Scarlett Johansson. Click the links to view 2011 covers featuring Nicki Minaj and Sui He, here for 2010 cover with Kim Kardashian, and here for 2009 cover with Linda Evangelista.