She’s wearing Dior Haute Couture Fall 2014 on the cover that was photographed by Paolo Roversi. Her smile looks creepy here… (source)
Click here to view last year cover featuring Maryna Linchuk, here to view 2012 cover featuring Linda Evangelista, here to view 2011 cover featuring Arizona Muse, here for 2010 cover with Jessica Stam, and here for 2009 cover with Claudia Schiffer.