Heidi Klum as Jessica Rabbit:
Va va VOOM! Heidi Klum never disappoints on Halloween, especially as cartoon vixen Jessica Rabbit. We can hardly believe it's Heidi inside that dress!
Kim Kardashian as a mermaid:
Kim Kardashian looks just at home under the sea as she does on the red carpet, or at one of Kanye's fashion shows.
Chrissy Teigan as Toddlers & Tiaras:
Chrissy Teigen's got it locked up as Honey Boo Boo. Honestly, if she weren't so tall, she'd fit right in with all of the toddler pageant regulars!
Paris Hilton as an Amazon warrior
Xena who? Paris Hilton stuns as a class Amazon warrior, complete with armor and shield. We'd let her be queen of the Amazons any day of the week!
Perez Hilton as Miley Cyrus
Martha Stewart as the Fairy Godmother
Martha Stewart is most definitely a good witch in this absolute confection of a costume! Bibbidi, bobbidi boo, and you're carried off into a magical adventure beyond your wildest dreams...
Lauren Conrad as Cruella de Vil
No one's more devilish than Lauren Conrad, dressed as the villainous Cruella deVil from Disney's "101 Dalmatians"! Make sure to keep your puppies far, far away from her.
Ariana Grande and Mac Miller as Neo and Trinity
You'd 100% take the red pill to fight a horde of Agent Smiths with Mac Miller and Ariana Grande! What is reality anyways, and who really wants to live in it?
Khloe Kardashian as Storm
Khloe is absolutely glowy as X-Men's Storm. Everything about this is fierce, from her special-effects contact lenses to the silver hair to the ridonkadonk catsuit. Fierce!
Demo Lovato as a maid
Demi could come clean my house anytime in this absolutely 100% killer outfit. The best part might actually be the bob haircut and the matching headpiece, it really brings the whole look together!
Beyoncé, Jay-Z, and Blue Ivy as Barbie, Ken, and Baby Barbie
Barbie is a Barbie girl, living in a Beyoncé world, and don't you forget that, you hear? The whole Knowles-Carter family shines as America's favorite fashionable doll family!
Kylie Jenner as Christina Aguilera
Kylie's a genie in a bottle, baby! She's absolutely shining as X-tina, in one of the best recent throwback costumes in recent memory.
Colton Haynes as Miss Piggy
Hi-YAA! Colton Haynes slays as the legendarily high-fashion and high-maintenance Miss Piggy, the Muppet eternally in search of eternal love with her sweet Kermie, aka Kermit the Frog. 100% commitment to this look!
Kendall Jenner as Karl Lagerfeld
The Kardashians RULE at Halloween, and Kendall here is an amazing Karl Lagerfeld. She emulates the iconic fashion designer while still putting a sexy feminine twist on the ensemble.
Cole Sprouse as Milo Thatch
Cole is the spitting image of the leading man from Disney's "Atlantis: The Lost Empire". 10/10, would 100% explore lost and sunken lands with him!
Nina Dobrev as Posh Spice
A zig-a-zig-ah! Girl Power is back and better than ever with this expertly executed group Spice Girls costume! Friendship never ends...
Taylor Swift as a Pegacorn
It's a bird, it's a plane, it's a... pegacorn!? (Look what you made me do.) Taylor Swift is improbably cute as the fantastical pegacorn, which didn't exist in the lexicon until this photo was taken. Amazing!! Embed