Going out on Halloween, you'll see your fair share of cat ears, skeleton masks, and tiny cop outfits. Some people, however, truly commit to their looks — especially celebrities.

These celebrities used Halloween 2017 as an opportunity to completely transform their looks:

1

LeBron James was a Pennywise that will haunt our dreams.

Georgie!! Georgie!! #HappyHalloweenFolks ????????

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2

Yup, this is Heidi Klum, Queen of Halloween, as the werewolf from the "Thriller" music video.

A post shared by Heidi Klum (@heidiklum) on

3

Swiss Beatz is allegedly a character from "The Goonies." (And yes, that's Alicia Keys by his side!)

4

This celebrity couple is none other than Channing Tatum and Jenna Dewan Tatum as Sally and Jack from "The Nightmare Before Christmas."

5

That's Zayn Malik under the Spider-Man mask lifting up Felicia Hardy aka Gigi Hadid.

A post shared by Gigi Hadid (@gigihadid) on

6

Jason Derulo made a truly terrifying Night King from "Game of Thrones."

A post shared by Jason (@jasonderulo) on

7

Did he inspire Usher? Usher was unrecognizable as the Night King as well.

A post shared by Usher (@usher) on

8

Behati Prinsloo committed to her spooky skeleton look.

9

And Colton Haynes REALLY committed to being Marge Simpson.

10

OK, I know that's Chrissy Teigen, but I would NOT have guessed that was John Legend. (They're Groucho Marx and Carmen Miranda from "Copacabana.")

A post shared by John Legend (@johnlegend) on

11

Whoa, Lady Gaga as Edward Scissorhands is mesmerizing.

A post shared by xoxo, Gaga (@ladygaga) on

12

Yes, that IS Fabolous underneath that Peter Griffin outfit.

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13

Bruce Willis went as one of the twin girls from "The Shining" and it was really something.

14

You can KIND OF tell that's Kylie Jenner underneath the icy eyelashes and contacts. KIND OF. (She makes for a very evil-looking angel.)

A post shared by Kylie (@kyliejenner) on

15

That's Steph Curry, just riding his tricycle, terrifying everyone as Jigsaw.

16

Ariana Grande and Mac Miller went hard for their "Zoolander"-inspired couples costume.