People.com's Halloween Party

Before They Were Stars: Halloween Costumes!

See Carrie Underwood as a bunny, Nick Jonas as the Blue's Clues pooch and more stars when they were still trick-or-treating!

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DAVID COOK

"What can I possibly say that hasn't already been said about another mouse that apparently had to pee?" jokes the American Idol, here age 3 as a mouse in Blue Springs, Mo.
Boo! Hollywood's Real Ghost Hunters!

Boo! Hollywood's Real Ghost Hunters!

Is Leighton a fraidy-cat? Does Anna believe in ghosts? Find out who jumps at things that go bump in the night!

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