Mike "The Situation" Sorrentino & Wendy Williams
The Jersey Shore star and the talk show host take flight during the Wendy Williams Halloween special.
Fergie
The singer reveals she's clearly a Toddlers & Tiara's fan upon showing up at Heidi's Halloween party.
Michelle Trachtenberg
The actress gets animated at Heidi's bash thanks to her Nightmare Before Christmas costume.
Bridget Marquard
Look out, Zombie Bunny Bridget is on the loose at Planet Hollywood in Vegas.
Nicole Richie, Joel Madden, Sparrow & Harlow
The celeb parents tote their princess and pumpkin out for a good scary night.
Padma Lakshmi & Krishna
The fierce Top Chef host handles a dangerously cute lion.
Alex McCord & Simon van Kempen
What's scarier than being booted from The Real Housewives of New York City? Frankenstein and his bride, of course! And that's what the reality TV couple showed up to designer Mark Bouwer's Pop Art Halloween party in NYC dressed as.
Jennifer Garner
Most days, the actress and mom is bewitching, but here she's postively spellbinding!
Kelly Ripa & Nick Lachey
Talk about crazy timing! On the same day that Kim Kardashian filed for divorce from Kris Humphries, Kelly and Nick spoofed the couple's wedding-day look on Live With Regis and Kelly.
Ellen DeGeneres
The hostess with the mostest channeled Sophie Grace, the 5-year-old singer who guested on her show just weeks ago. "Honestly I cannot believe me I am in this outfit," Ellen said. "It's hard for me to decide what to be each year. I have a few rules. No dresses, no pink and no wigs. So that worked out."
Matt Lauer & Ann Curry
Awww, gotta love the Today show's Halloween theme this year. The hosts reenact Prince William and Kate Middleton's amazing royal nuptials.
Kathie Lee Gifford, Hoda Kotbe
The Today show's royal wedding-themed Halloween wasn't complete without Princess Eugenie's and Princess Beatrice's colorful fascinators!
Sara Haines & Giada De Laurentiis
While the chatfest correspondent plays her part as preggo wedding onlooker Victoria Beckham, special guest Giada gushed that her Katy Perry costume was inspired by her 3-year-old daughter, Jade, who adores the pop star.
Ann Curry & Meredith Vieira
All hail the Queen's doppelgänger!
Doug Hutchison & Courtney Stodden
These two just can't get enough of themselves. So much so that the actor decided to channel his 17-year-old wife for Halloween.
Heidi Klum
Another year, another amazing costume from the supermodel, who manages to outdo herself every Halloween!
Bethenny Frankel
Purrrr! The reality star shows up for Heidi Klum's annual Halloween bash dressed as the iconic Sanrio character.
Melania Trump
Move over, Anne Hathaway, there's a new Catwoman in town!
Gwen Stefani, Tony Kanal & Friends
Just your average carpool in Los Angeles, people.
Emma Stone
The cute actress dressed as a character from Nightmare Before Christmas.
Kim Kardashian
Sometimes, it's easy being green, as the reality star shows with her Poison Ivy costume at the Midori Green bash at Lavo in New York City.
Ali Larter and Hayes MacArthur
This two honeys had everyone abuzz...because they were dressed as bees.
Gwen Stefani
The rocker mom trades Cinderella's pumpkin for a more time-friendly car, arriving at Kate Hudson's Halloween bash in Los Angeles. Who wants to stop partying at midnight, right?
Snooki
Catting around in Vegas at Pure Nightclub, the party monster seems to right at home, in her natural habitat if you will. Rowr!