My new theory:

There is a direct relationship between how large a persons sunglasses are and their apparent lack of an I.Q.

1) Paris Hilton I.Q. 2) Nicole Ritchie

 

3) Mary Kay Olsen I.Q. 4) Victoria Beckham I.Q.
Ashely Olsen is not pictured here do to the fact that she shares a brain with her twin sister Mary-Kate (Pic #3).

The collective I.Q. of everyone represented here would not understand a Baby Einstein video.

1) Paris Hilton 2) Nicole Richie 3) Mary-Kate Olsen 4) Victoria Beckham.