Who you supposed to be?

If the average Joe dresses up for Halloween as a celebrity, does that mean that celebrities dress up as the average Joe?

Reese Whitherspoon and boyfriend Jake G dressed up as a witch and gorilla while taking her kids trick or treating.

And here they are on their way to Kate Hudson's Halloween party.

Heidi Klum was a cat


Liv Tyler and her family hit the pavement looking for candy

Lauren Conrad dressed in the most over killed costume of the year, a naughty sailor

Audrina got old school with a Madonna costume, a'la Like a Virgin

Regis and Kelly looked dead on as David and Victoria Beckham

And Britney went as...well....a hot mess. In other words, as herself.