"Hills" Babes Skank Their Way to the Top

5/23/2008 1:19 PM PDT
So on TMZ TV tonight, we're getting to the bottom of the skankiest question in Hollywood -- Which "Hills" chick is the biggest tramp?

Lauren Conrad was the original Queen Bee, until Heidi raised her game with a couple of "enhancements." But Audrina blew them both out of the water with those nude pics.

So the question is ...