The Divergent star is photographed by Mitchell Nguyen McCormack and styled by Alexa Rangroummith Green for the cover. (source)
The cover was snapped by Nicole Heineger. (source)
Click here to view last year cover featuring Lily Aldridge, here to view 2012 cover featuring Georgia May Jagger, here for 2011 cover with Barbara Berger, and here for 2010 cover also with Barbara Berger.
Marcin Tyszka shot the cover. (source)