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!

  • BILLY BUSH photo | Billy Bush

Credit: Courtesy Billy Bush; Inset:Goff/INF

Updated: Wednesday Oct 28, 2009 | 06:00 AM EDT

6 of 20

BILLY BUSH

Guess no one wanted to be Robin! The Access Hollywood host (right) was 4 when he dressed up as crime-fighting duo Batman & Batman for a New York City Halloween with best friend Mikey Patterson.

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