Cass Bird shot the covers. (source)
UPDATED FEBRUARY 20TH 2018: Added new covers with Paloma Elsesser, Teddy Quinlivan, Hanne Gaby Odiele, Dara Allen, Doutzen Kroes, Liya Kebede, Anja Rubik, Cameron Russell, and Christy Turlington by Inez Van Lamsweerde and Vinoodh Matadin. (source)
The image is shot by Oliver Hadlee Pearch. Click the links to view the first two covers with Binx Walton and Adut Akech. (source)
The covers are shot by Hyea Won Kang. (source)
Click here to view last year covers featuring G Dragon, Sung Hee Kim, Ji Hye Park, Soo Joo Park, Sora Choi and Hyun Ji, here to view 2015 cover featuring Tilda Swinton, here to view 2014 covers featuring Karen Elson, Anja Rubik, Joan Smalls, Lily Donaldson, and Candice Swanepoel, here to view 2013 covers featuring Soo Joo Park, Sung Hee Kim and Ji Hye Park, here to view 2012 cover featuring Lara Stone, here to view 2011 six different covers, here for 2010 covers with Natalia Vodianova and here for 2009 covers with Naomi Campbell, Eva Herzigova and Claudia Schiffer.