Your Favorite Stars Got in the Halloween Spirit With These Fun Costumes

Just like you, celebrities have been plotting, planning, and DIY-ing their Halloween costumes [1] for the past few weeks, so they also couldn't wait until Oct. 31 to show how ready they were for some trick-or-treating fun, kick-starting the spooky celebration a few days early at parties in Los Angeles and New York.

Mario Lopez and his wife decided on a pop culture costume from Saturday Night Fever for their first night out, later going as cowboys with their kids. Alessandra Ambrosio went super sexy as Jessica Rabbit, while Demi Lovato [2] opted for Dorothy from The Wizard of Oz and a maid as her looks. Nicole Richie, once again, stole the show [3] with an elaborate pick, this time as Siegfried and Roy. Read on to see your favorite stars all dressed up, then find a last-minute costume of your own [4].

Camila Cabello as an Old Lady Looking For Her Cat

Prince Royce as Chucky

Demi Lovato as a Maid

Jordana Brewster as a Skeleton

Mario Lopez as a Cowboy

Naya Rivera as a Mummy

Jackie Cruz as a Carnival Girl

Demi Lovato as Dorothy and Nick Jonas as the Scarecrow

Lili Estefan as Minnie Mouse

Manolo Vergara as a Dalmatian

Wilmer Valderrama as a Doctor

Victoria Justice as Beetlejuice

Lais Ribeiro as a Dead Nun

Cristiano Ronaldo as Guy Fawkes

Jake T. Austin and His Girlfriend as Baseball Players

Christina Milian as a Ninja

Nicole Richie and Friends as Siegfried and Roy and Their Lion

Bella Thorne as a Cowgirl

Ryan Lochte as the Mad Hatter

Jessica Alba and Kelly Sawyer as Patsy and Edina From Absolutely Fabulous

Alessandra Ambrosio as Jessica Rabbit

Mario Lopez and Courtney Mazza as Tony Manero and Stephanie Mangano From Saturday Night Fever

Mark Consuelos and a Friend as CHiPs

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