Jennifer Aniston for Harper's Bazaar Magazine

Now that Kim Kardashian has thrown down the ass-gauntlet, covers like this look quaintly tame, don’t they? “Cake” actress Jennifer Aniston covers the December 2014/January 2015 issue of Harper’s Bazaar magazine in a Balmain jumpsuit photographed by Alexi Lubomirski and styled by Joanna Hillman.   We’re sorry, Jen, but times have changed. You’re gonna have …