The Best Celebrity Halloween Costumes So Far This Year

Happy Halloween, everyone! It's officially the spookiest day of the year, and while today might be the actual day of All Hallow's Eve, the world's biggest celebrities have already been out and about celebrating all week. From Matthew Morrison's annual Halloween bash in L.A. to UNICEF's Masquerade Ball staged in a literally cemetery in Hollywood, the stars have been out in costume in full force.

And as per usual, everyone is taking to Instagram to post their favorite selfies of their costumes! We did some digging and came up with 16 solid celebrity Halloween costumes that comprise the best of 2014 so far. (Lauren Conrad not withstanding, of course.)

Keep scrolling to see the best celebrity Halloween costumes of the year so far!

Alessandra Ambrosio

"It's Halloween"

FOLLOW: alessandraambrosio

Ashley Benson

FOLLOW: itsashbenzo

Ashley Madekwe

"Gogo & Joker @jwdasha "

FOLLOW: smashleybell

Bianca Brandolini D'Adda

"That time of the year #halloween#london@giambattistavalli @giambattistapr"

FOLLOW: 1bianca_b

"My first Oscar de la Renta dress"

FOLLOW: bryanboycom

Cara Delevingne

"#regram @jakeschreier @halstonsage Happy Halloween!! #papertowns"

FOLLOW: caradelevingne

Derek Blasberg

"Dasha and I were seeing spots last night..."

FOLLOW: derekblasberg

"There's more to life than being really, really ridiculously good-looking! But no one tell@luckymagazine's @lukebub (sporting a @psimadethiscouture sweater) and @Nono_noelle. #luckyloveshalloween"

FOLLOW: evachen212

Hanne Gaby Odiele

"Friday!"

FOLLOW: hannegabysees

Jessica Alba

"#axlandslashforever #welcometothejungle@kellysawyer"

FOLLOW: jessicaalba

Katy Perry

"IDFWU *drops mic*"

FOLLOW: katyperry

Kim Kardashian

"My little stinker is waiting to show daddy her costume. Halloween has started early this morning"

FOLLOW: kimkardashian

Monica Rose

"#AlaiaRose as the #olsentwins #HappyHalloween"

FOLLOW: monicarosestyle

 

Nicole Richie

"101 MADDENS"

FOLLOW: nicolerichie

 

Rachel Zoe

"Headed out as evil queen and the Huntsman with my@rbermanus #allhallowseve #meandmybabe #datenight xoRZ"

FOLLOW: rachelzoe

Taylor Swift

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

FOLLOW: taylorswift

What are YOU dressing up as for Halloween? Tell us in the comments below!