Taylor Swift

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She could have dressed as Elsa or Anna, but the singer went the adorable Olaf route.

Neil Patrick Harris

The family that dresses up together…

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Gigi Hadad

It looks like the model was born to play Sandy Dee.

Heidi Klum

The supermodel is known for her over-the-top Halloween costumes, and her Jessica Rabbit did not disappoint.

Fergie and Josh Duhamel

The couple earns major cute points dressed as Karl Lagerfeld and his cat Choupette.

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Jessica Alba

Jessica Alba and friend Kelly Sawyer went as Nineties throwbacks Romy and Michele.

Anne Hathaway

Dressed as the new unicorn emoji, Anne Hathaway takes a selfie with Nina Dobrev.

Ellen DeGeneres

Wearing Kim and Khloes hand-me-downs, Ellen showed up as the lesser-known sixth Kardashian sister, Karla.

Adriana Lima

The Victorias Secret Angel killed as a Day of the Dead beauty.

Ruby Rose

The model, actress, singer looked 100 percent amazing with a half skeleton face.

Alessandra Ambrosio

Not much hotter than a Victorias Secret Angel dressed as a devil.

Allison Williams

The actress committed to bookish Belle.

Poppy Delevigne

The model crushed it as Harley Quinn fromSuicide Squad.

Jennifer Lopez

JLo and Casper Smart went as glamorous ghouls to Heidi Klums party.

Gwyneth Paltrow

Paltrow and her daughter Apple may have taken inspiration from JLo.

Kylie Jenner

The Wildings could take a costume cue from Kylies snow princess.

Nicki Minaj

A fairy princess only Minaj could pull off.

Amanda Seyfried

The actress and her dog win with theirWizard of Ozmoment.

Shay Mitchell

ThePretty Little Liarsstar traded her brown hair for a red wig as Poison Ivy.

Diane Guerrero

The actress played a convincing Tina Belcher fromBobs Burgers.

Eva Chen

The Instagram star pays awesome homage to Marilyn Manson.

Dwyane Johnson

The Rock makes a pretty convincing Popeye.

Miranda Kerr

The model went White Swan with her friend as Black Swan.

Tyra Banks

The media mogul went as business mogul Richard Branson.

Katy Perry

Yes, the singer actually dropped the mic on Halloween.

Kim Kardashian

As only she can do, Kim Kardashian went as herself.

Beyonce

The singer made everyones Halloween with Blue Ivy and Jay Z dressed as the cast ofComing to America.

Nina Dobrev

The Vampire Diaries actress plays a very convincing Posh Spice.

Chrissy Teigen

Maybe she’s having pregnancy cravingsthat would explain the Guy Fieri costume.

Demi Lovato

Gotta love a punny costumethe singer went dressed as a “trap queen.”

Lena Dunham

Simple + topical = genius!

Beyonce

Queen Bey took Ciara’s birthday party by Storm.

(And blew away comedian Jeff Dye.)

Kourtney Kardashian

Kourtney’s adorable superhero crew included North West disguised as a unicorn.

Lauren Conrad

LC’s delivers her take on “party animals.”

Colton Haynes

The actor may have won Halloween with his Ursula fromThe Little Mermaid.

Ciara and Russell Wilson

For the singer’s 30th birthday party, the couple dressed as Catwoman and Batman.

Lily Collins

Despite having a cape, the actress had to wait for her ride.

Miley Cyrus

Wonder what Cyrus' Cinderella will turn into at midnight?

Channing Tatum

TheMagic Mikestar models the ultimate dad bod.