Here are the best Halloween costumes worn by celebs, sorted by solo lewks, couple lewks and group lewks...
SOLO COSTUMES
Khloè Kardashian as Storm (X-Men)
Perrie Edwards as a mermaid
Hailey Baldwin as Barbie
Emma Roberts as a skeleton
Halsey as Harley Quinn (Suicide Squad)
Sofia Richie as a race car driver
Kylie Jenner as a snow princess
Taylor Swift as a pegacorn
Ashley Benson as Annabelle (Annabelle: Creation)
Zendaya as a ballerina
Nina Dobrev as Hermione (Harry Potter)
Kendall Jenner as a black cat
COUPLE COSTUMES
Ariana Grande and Mac Miller as Trinity and Neo (The Matrix)
Demi Lovato and Nick Jonas as Dorothy and Scarecrow (The Wizard of Oz)
Vanessa Hudgens and Austin Butler as Alice and the Mad Hatter (Alice in Wonderland)
Ashley Benson and Tyler Blackburn as vampires
Wilmer Valderrama and Demi Lovato as Day of the Dead skulls
Amy Schumer and her BF as Dustin and Eleven (Stranger Things)
Bella and Dani Thorne as zombie cheerleaders
Kendall Jenner and Cara Delevingne as Mario and Luigi
Iggy Azalea and her pal went as the gals from White Chicks
GROUP COSTUMES
DNCE as Cruella de Vil and the dalmatians (101 Dalmatians)
Miranda Cosgrove, Jeanette McCurdy and Ryan McCartan as Daphne, Thelma and Shaggy (Scooby-Doo)
Kourtney Kardashian, Mason, Penelope and Reign Disick as the Power Rangers
The Glee cast as the Looney Tunes
R5 as The Avengers
Ariana Grande, Miranda Cosgrove, Liz Gillies, and their friend as superheroes
Bb Dylan and Cole Sprouse and their 'rents as old school band KISS