No, you are not seeing double. These nine celebrities should probably check their birth certificates because they look way too similar to not be related. Are we missing any?

1. John Krasinsky and Zachary Levi.

One plays a geeky paper salesman on "The Office" and the other a geeky, super spy on "Chuck." No wonder they are often confused.

2. Susan Sarandon and Sigourney Weaver.

“I wanna just clarify a few things. Sigourney may have left the stage, but we are two different people. I have taken credit for 'Alien' many times and she’s signed autographs for me,” Sarandon said.

3. Salma Hayek and Penelope Cruz.

Regardless of who's who, both are beauties.

4. Jeffery Dean Morgan and Javier Bardem.

Come on -- they are dead ringers for one another.

5. Leighton Meester and Minka Kelly.

Not only are they lookalikes, but they also starred in "The Roommate" together.

6. Christian Bale and a young James Brolin.

Seriously -- did he take a time machine?

7. Rosemarie Dewitt and Mary Louise Parker.

Both hilarious and hard hitting actresses, they are often confused for one another, although Mary Louise Parker has, arguably, the bigger career.

8. Amy Smart and Peta Wilson.

Honestly, Amy Smart is maybe one sleepless night away from being Peta Wilson's clone.

9. Sarah Roemer and Blake Lively.

Who cares? We'd take either.