She is wearing Dolce & Gabbana on the cover (styled by Irina Marie), photographed by Warren Du Preez and Nick Thornton Jones. (source)
The striking cover was photographed by Warren Du Preez and Nick Thornton Jones with the styling works by Franck Benhamou.
Click here to view last year August cover featuring Samantha Gradoville, here for 2010 cover with Emily DiDonato and here for 2009 cover with Catherine McNeil.
Image via TFS.