The "Girls Gone Wild" bash attracted big and little stars alike; and everyone was in their Halloween best.

"Terminator 2's" Edward Furlong was right in the mood for the Hollywood bash. There was stunning Shauna Sand, an arresting Andy Dick, and a bullish Mario Lopez. Lopez says, "I wanted my cousin to dress as a bull and chase me."

But Ryan Seacrest, dressed up as a vampire, was just counting on having a good time.