Okay honestly, when I first saw the trailer for Pirates of the Caribbean: Curse of the Black Pearl, I thought Natalie Portman played Elizabeth Swan. Little did I know that Hollywood had already thought that NatPort and KK looked like twinsies.
Fun Fact: In Star Wars Episode I, Queen Amidala's decoy is played by Keira Knightley.
But wait, there's more! I thought about it a little bit, and then realized that W.Ryder could also pass the test. Maybe.
Therefore, I give you this piece of evidence, recovered from the NANCY vault circa March 2007:
As Officer Hannah Tan would say,
"Pouty Lips Galore!"
Okay, after further investigation, it seems NANCY is not the only super sleuths to have discovered such look-alikery. The result of googling "Natalie Portman" has led to another source of KK and NatPort evidence:
What kind of tom foolery is this?
NANCY will tell you what this is:
separation at birth.
And "People En Espagnol" will back me up on this because that's exactly where I found this photo.