The covers with Troye Sivan, Taylor Hill, Lucky Blue Smith and Kacy Hill were snapped by Mario Testino, styled by Paul Cavaco. (source)
Click here to view last year cover featuring Lana Del Rey, here to view last year cover featuring Miley Cyrus, here to view 2013 covers featuring Lady Gaga. Click here to view 2014 cover featuring Nicole Kidman, here to view 2011 featuring Kate Winslet. Click the links to view last year covers featuring Tyson Ballou/Marina Abramovic and Marc Jacobs/Lady Gaga with artwork by Dan Colen, artwork by Spencer Sweeney and artwork by Nate Lowman.