Actress Keira Knightley, best known for her roles in "Pirates of the Caribbean," "Pride & Prejudice," "Love Actually," ...

The beautiful Keira Knightley is celebrating her 40th birthday today, and we are joining in the celebration by revisiting the ...

Now, in honor of her 40th birthday, we take a look back at her most memorable roles to date, from playing plucky footballers ...

Don't believe me? Here's 35 of the greatest sci-fi movies of the 2010s.