The cover is shot by Phil Poynter. (source)
Click here to view last year cover featuring Jennifer Aniston, here to view 2017 cover featuring Selena Gomez, here to view 2016 cover featuring Kerry Washington, here to view 2015 cover featuring Anne Hathaway, here to view 2014 cover featuring Julia Roberts, here to view last 2013 featuring Drew Barrymore, here to view 2012 cover featuring Jennifer Lopez, here to view 2011 cover featuring Beyoncé, here for 2010 cover with Hilary Swank, and here for 2009 cover with also with Jennifer Lopez.
The cover stars are Camila Cabello, Stephan James and Cole Sprouse. (source)