The cover is shot by Mert Alas & Marcus Piggott. (source)
Click here to view last year cover featuring Natasha Poly, here to view 2014 cover featuring Lindsey Wixson, here to view 2013 cover featuring Sasha Pivovarova, here to view 2012 cover featuring Natalia Vodianova, here to view 2011 cover featuring Natasha Poly, here for 2010 cover with Natalia Vodianova, and here for 2009 cover with Kate Moss.