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Lady Gaga as Edward Scissorhands

Never one to shy away from a complex look, the singer became Johnny Depp's iconic character from Tim Burton's 1990 film.

Heidi Klum as Michael Jackson in "Thriller" video.

She's done it, again.

Niel Patrick Harris and his family as circus freaks

"Step right up and behold the Burtka-Harris Halloween Carnival of Curiosities!" the actor wrote on Instagram

Mac Miller and Ariana Grande as Mugatu and Katinka from Zoolander

This is how you do a fashion Halloween costume.

Kim Kardashian as Selena Quintanilla

"My fave Selena!!!!" wrote Kardashian.

Jenna Dewan and Channing Tatum as Sally and Jack

Tim Burton, are you paying attention?

Khloe Kardashian and Tristan Thompson as Khaleesi and Khal Drogo

"Moon of my life," Khloe wrote on Instagram

Nicole Scherzinger as Cleopatra

A costume fit for a queen.

Fergie and her son as Peter Pan and Tinkerbell

This is just too cute.

Kristen Bell as Thomas Magnum

Jimmy Kimmel got the actress to channel her inner investigator.

Dave Grohl as David Letterman

If the glasses and jacket don't clue you in, check out that beard!

Rita Ora as Poison Ivy

Heroes are cool, but villains always have the coolest outfits.

Demi Lovato as Selena Quintanilla

'Bidi Bidi Bom Bom!' Demi is the spitting image of the late Tejano music icon.

Dua Lipa as Lydia Deetz

Beetlejuice! Beetlejuice! Beetlejuice!

Kim Kardashian and Jonathan Cheban as Sonny and Cher

They got us, babe.

Gwyneth Paltrow and Brad Falchuk

We always guessed what was inside the box, but now we know for sure. Thanks Gwyneth!

Will Poulter as Sid (Toy Story)

So play nice.

Jack Falahee as Eleven (Stranger Things)

How to get away with... telekinesis?

Adele

The singer is making clowns (we're guessing here) cool again.

Aubrey Plaza as Wednesday Addams

Yes, it's a costume.

Zoë Kravitz and Karl Glusman as Marla Singer and Tyler Durden (Fight Club)

This one, you can talk about.

Colton Haynes as Marge Simpson

Yet another Halloween succes for the actor

G-Eazy and Halsey as Jay Gatsby and Daisy Buchanan

Couples' costume goals, old sport.

Kristen Bell as Elsa

At a certain point, you just have to say "let it go" to your own Frozen character.

Usher and Grace Miguel

Usher channeled Pulp Fiction's Jules Winnfield and his wife dressed as 'DHALIA.'

Busy Philipps as Hedwig

Ask her about the box her wig came in!

Jessica Alba as Juno

The actress even brought her own Paulie!

Steph Curry as Jigsaw

The athlete is always playing games -- tricycle included.

Kehlani

The Fantanas — don't you wanna?

Kelly Rowland as Strangé

Grace Jones is proud.

Lauren Jauregui as Satine

Welcome to the Moulin Rouge!

Isla Fisher

A mythical and sparkly creature — and a unicorn, too.

Lauren Conrad as Cruella de Vil

Evil never looked more chic.

Ryan Seacrest and Kelly Ripa as handmaids

The co-hosts nailed the Handmaid's Tale costume: simple yet disturbing.

Kaia Gerber

The model is serving pure 1970s glamour.

Whitney Cummings as a broken girl

Three Broke Girls? We're in.

Molly Gordon and Ben Splatt

Both nailed that 70s look.

LeBron James as Pennywise

We'll all be having nightmares after seeing this.

Shania Twain as a leopard and Megyn Kelly as Shania Twain

Let's go girls!

Cardi B as Cruella De Vill

These expensive, these is dalmatian spots!

Ellen DeGeneres as Karla Kardashian

The Kardashian dynasty keeps growing.

Julie Bowen as 80s Ellen DeGeneres

Spot on Throwback Tuesday.

Sarah Michelle Gellar and Freddie Prinze Jr. as Andie Walsh and Duckie (Pretty in Pink)

They're all that.

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