The stars went all out this Halloween and most opted for scary or funny costumes.

Check them all out below and tell us which one is your favorite.

Taylor Swift:

 Cause, darling I'm a nightmare dressed like a PEGACORN. #HappyHalloween!

A photo posted by Taylor Swift (@taylorswift) on Oct 10, 2014 at 4:49am PDT

Gwen Stefani:

Happy Halloween gx A photo posted by Gwen Stefani (@gwenstefani) on Oct 10, 2014 at 9:25pm PDT

Kate Hudson:

 The Hudson's unite ! Thank u @hudsonjeans_pk @hudsonjeans for making these killer costumes a reality

A photo posted by Kate Hudson (@katehudson) on Oct 10, 2014 at 8:31pm PDT

Sarah Hyland:

Beyonce and Blue Ivy:

 Janet and MJ

Una foto publicada por Beyoncé (@beyonce) el Oct 10, 2014 at 2:39 PDT

Michael Strahan:

Time to change into the next costume...standby! #LIVEzombies #LIVEHalloween A photo posted by michaelstrahan (@michaelstrahan) on Oct 10, 2014 at 6:28am PDT

Katy Perry:

 IDFWU *drops mic*

Zdjęcie zamieszczone przez użytkownika KATY PERRY (@katyperry) Wł. Paź 10, 2014 at 1:13 PDT

Ryan Seacrest:

Heading into the lab! #madscientist A photo posted by Ryan Seacrest (@ryanseacrest) on Oct 10, 2014 at 8:53am PDT

Kim Kardashian:

 Look #1- Skeleton

A photo posted by Kim Kardashian West (@kimkardashian) on Oct 10, 2014 at 4:32pm PDT

Karl, Grace, Anna, Andre Uma foto publicada por Kim Kardashian West (@kimkardashian) em Out 10, 2014 at 5:40 PDT

Jessica Alba:

 #axlandslashforever #welcometothejungle @kellysawyer

Une photo publiée par Jessica Alba (@jessicaalba) le Oct. 10, 2014 at 9:52 PDT

Cara Delevingne:

#regram @jakeschreier @halstonsage Happy Halloween!! #papertowns Uma foto publicada por Cara Delevingne (@caradelevingne) em Out 10, 2014 at 8:38 PDT

Kelly Ripa:

 Be honest. Is there something in my teeth? Happy Halloween boos!

A photo posted by Kelly Ripa (@kellyripa) on Oct 10, 2014 at 8:17am PDT

Justin Bieber:

Lea Michele:

 HAPPY HALLOWEEN!!!!

A photo posted by Lea Michele (@msleamichele) on Oct 10, 2014 at 10:18am PDT

Nicole Richie:

101 MADDENS A photo posted by @nicolerichie on Oct 10, 2014 at 7:06am PDT

Kelly Osbourne:

 #Halloween fun with @shenaegrimesbeech & @joshbeech

A photo posted by Kelly Osbourne (@kellyosbourne) on Oct 10, 2014 at 11:51pm PDT

Paris Hilton:

I Shoes. A photo posted by Paris Hilton (@parishilton) on Oct 10, 2014 at 8:19pm PDT

Chris Colfer:

 I went to a Halloween party once. It was terrible. #GrumpyCat

A photo posted by Chris Colfer (@hrhchriscolfer) on Oct 10, 2014 at 9:12pm PDT

Rosie O'Donnell:

Happy Halloween - love Michelle and me A photo posted by Rosie ODonnell (@rosie) on Oct 10, 2014 at 9:05am PDT

Michelle Trachtenberg:

 #Halloween as a broken porcelain doll. #NYC

Ein von Michelle Trachtenberg (@michelletrachtenberg) gepostetes Foto am Okt 10, 2014 at 10:14 PDT

Austin Mahone:

Yes I'm a Monk Jedi A photo posted by Austin Mahone (@austinmahone) on Oct 10, 2014 at 4:25pm PDT

Miranda Lambert:

 We CAN do it! Happy Halloween!

A photo posted by Miranda Lambert (@mirandalambert) on Oct 10, 2014 at 4:37pm PDT

Neil Patrick Harris:

Happy Halloween from Gotham City!! Ein von Neil Patrick Harris (@instagranph) gepostetes Foto am Okt 10, 2014 at 2:33 PDT

Nicki Minaj:

 I decided to go as the teachers pet.

Une photo publiée par Nicki Minaj (@nickiminaj) le Oct. 10, 2014 at 5:21 PDT

Ed Sheeran:

Yeah baby Uma foto publicada por @teddysphotos em Out 10, 2014 at 12:10 PDT

Alessandra Ambrosio:

 #happyhalloween with @missmassblog

Una foto pubblicata da alessandraambrosio (@alessandraambrosio) in data Ott 10, 2014 at 7:28 PDT

Monica:

Maria Menounos:

Hilary Duff:

#happyhalloween #trickortreat smell our feet #captinamerica #wickedwitch candddddy hopefully this sugar crash makes him sleep in!!! Zdjęcie zamieszczone przez użytkownika Hilary Duff (@hilaryduff) Wł. Paź 10, 2014 at 7:08 PDT