Keira Knightley is the cover girl for the much-anticipated September fall fashion issue for Vogue.

The cover headline reads that Keira is a “fashion star, pirate queen, history’s sexiest Duchess.” Her new film The Duchess actually opens in the UK on September 5 and in limited release in the USA on September 19.

The 23-year-old British actress last appeared on the June 2007 cover, which was the second-lowest seller of that half of the year. It sold a mere 405,000 copies.

As for the other September cover girls, Penelope Cruz does Glamour, Jessica Simpson does Elle, Blake Lively does Cosmopolitan, and Vanessa Hudgens does Teen Vogue.

Read more at: http://justjared.buzznet.com/2008/08/11/keira-knightley-vogue-september-2008/.