She is wearing Dior on the last 2014 cover of Vogue Japan, photographed by Giampaolo Sgura. (source)
Click here to view last year cover featuring Daria Strokous, here to view 2012 cover featuring Kendra Spears, here to view 2011 cover featuring Aymeline Valade, here for 2010 cover with Sasha Pivovarova, and here for 2009 cover also with Sasha Pivovarova.