While we anxiously await the 2014 Sports Illustrated Swimsuit Issue which debuts on Feb. 11, we look back into the illustrious past of the titillating publication. During the fifty years of the S.I. Swimsuit Issue, the sexiest women on the planet have graced the cover. We attempt to rank the gorgeous models going all the way back to 1964. To be fair to the late 60’s and 70’s women they had an unfair playing field because of their lack of nutrition regiments, plastic surgery and photo editing. Please step into the virtual time machine that will take you through fifty years of hotness.