September Vogue: Last Ladymag Standing (And Jumping)

September Vogue » 8/28/08 3:00pm 8/28/08 3:00pm jumps out on the news stand for all the wrong reasons. On her fourth cover in three years, Keira Knightley's hair looks reminiscent of a baby primate (though not in a cute way), her pose is all wrong for the Balenciaga she's wearing, and her expression has a whiff of self-consciousness and striverdom…