Keira Knightley Gets Constantly Mistaken For Britney Spears! It's The Truth - But We Want To Know If You Agree!

This 29-year-old actress has been mistaken for a lot of female celebrities before — including Natalie Portman and Kate Winslet…<br/><br/>But one would never guess that Keira Knightley was thought to be pop star Britney Spears more than once!!<br/><br/>The Pride And Prejudice star recently opened up about her unlikely musical doppelgänger: <br/><br/>"But the one that’s surprising [...]