Keira Knightley is refusing to star in any more PIRATE OF THE CARIBBEAN sequels, insisting the third movie will be her last in the swashbuckling franchise. The 22-year-old beauty made the announcement after finishing filming Pirates Of The Caribbean: AT WORLDS END, which will be released next year (07). Knightley has played the part of cabin girl ELIZABETH SWANN since 2003's Pirates of the Caribbean: The Curse of the Black Pearl. The British actress says, "I've been playing this girl since I was 17. "I'm 21 now and I'm onto very different things."