Kim Kardashian wasn’t the first star to bare her booty on the cover of a magazine. In case you missed it… Jennifer Aniston showed off her derriere on the cover of Rolling Stone, 18 years before Kim K's Paper magazine cover. “Extra” caught up with Jen at the “Horrible Bosses 2” premiere. The actress teased that she was the real pioneer, "I was an original, alright? Sorry Kim K."