The cover was snapped by Simon Upton. (source)
Click here to view last year cover featuring Coco Rocha, here to view 2013 cover featuring Drew Barrymore, here to view 2012 cover featuring Taylor Swift, here for 2011 covers with Abbie Cornish, Alice Englert and Rachael Taylor, and here for 2010 cover with Mia Wasikowska.