The cover is shot by Patrick Demarchelier. (source)
Click here to view this year cover featuring Cameron Russell, here to view 2016 cover featuring Vanessa Moody, here to view 2015 covers featuring Andreea Diaconu, Karmen Pedaru and Hilary Rhoda, here to view 2014 cover featuring Joan Smalls, here to view 2013 cover featuring Jessica Chastain, here to view 2012 cover featuring Carola Remer, here for 2011 cover with Maryna Linchuk, and here for 2010 cover with Toni Garrn.