19 Celebrity Halloween Costumes That Came From Your Nightmares

Over the years, Hollywood has pulled out all the stops when it comes to Halloween [1], giving us hundreds of spectacular looks to appreciate and imitate. Plenty of stars have gone the sexy route [2] — we're looking at you, Kim Kardashian [3] — while others opt for dialing down the sex appeal. And of course, we can always expect the industry's hottest couples to pair up and shut it down [4]. But perhaps the most fun fancy dress costumes have been those that dial up the horror, just enough to give you the creeps. We're talking zombies, skeletons, and yes, plenty of creepy clowns. Keep scrolling for some of the scariest celeb Halloween [5] costumes.

Demi Lovato as Pennywise

Shay Mitchell as a Zombie Bride

Michelle Trachtenberg as a Broken Porcelain Doll

Admit it: you'd be scarred for life if you saw this gal in real life.

Demi Lovato as a Zombie of Some Sort

Yeah, we're just going to be over here on the other side of the brick wall.

Heidi Klum and Seal as Monkeys

This is some Planet of the Apes madness, and we're not sure we're here for it.

Kelly Obsbourne as a Clown

Padma Lakshmi and Susan Sarandon as a Day of the Dead Bride and Groom

So much for "'till death do us part."

Kim Kardashian as a Walking Skeleton

You'd totally run the opposite direction if you saw something like this coming your way.

Heidi Klum as a Skinned Woman

At least there's a doctor nearby, just in case.

Scott Disick as Patrick Bateman (American Psycho)

He might not look that scary, but if you had this guy chasing you through an apartment building, you can bet you'd be screaming your head off.

Heidi Klum as a Butterfly

Oh, you thought butterflies were cute and pretty? How about a butterfly the size of a human?!

Ashley Madekwe as the Joker

This instantly brings us back to Heath Ledger [6]'s brilliant, chilling performance in The Dark Knight.

Miley Cyrus as a Nightmare Baby

Oh, it's totally fine, we didn't need any sleep this week. Or this month.

Brittny Gastineau as a Vampire

We're just going to go ahead and padlock that coffin, OK?

Adam Levine as Rambo

You know, this one's kind of sexy-scary. We'll include just to give your eyes a rest.

Josh Duhamel and Fergie as a Day of the Dead Pair

The pose makes them that much creepier.

Ariana Grande as a Vampire

It's the eyes.

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