Katy Perry ROCKS W Magazines cover with a smoldering vintage pin-up look.  The Roar singer is photographed with her signature black locks, bright blue eyes and donning an extremely revealing little white dress where it is almost impossible to concentrate on anything BUT her boobs!  The stars newest album PRISM was released just yesterday and what a better way to celebrate than by posing for the cover of the iconic magazine?  Be sure to check out her smoking hot pictures from W Magazine! Check out more pictures here!