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!

8 of 20

LEANN RIMES

"This picture was taken at my Godmother's house in Texas," says the country singer, here as a pumpkin at age 3. "I love celebrating any holiday and love dressing up for Halloween. It was instilled in me early on!"
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!

See Photos