Get 4 FREE Issues of PEOPLE
Stars' Halloween PetsCall the puparazzi! Spot the furbabies of Alyssa Milano and other celebs in disguise
Updated: Thursday Oct 27, 2011 | 06:00 AM EDT
More from PEOPLE
See More News
13 of 19
Trick-or-treating always goes better with a little dress rehearsal, and Barton got her dinosaur dog into the spirit.
Copyright © 2014 Time Inc. All rights reserved. Reproduction in whole or in part without permission is prohibited.
In partnership with AOL