Celebrities — they’re just like us. While they get dressed up almost every day of the year for concerts, galas, and award shows, dressing silly for Halloween is still a special occasion for them.
Cindy Crawford's husband Rande Gerbe and George Clooney hosted a Casamigos Tequila Halloween party in Los Angeles. The former supermodel and businessman rocked it out as members of the Hells Angels motorcycle club.
Also in attendance at the hottest party in Tinseltown was Gwen Stefani dressed as a sexy cowgirl while Jessica Alba "invented post its" with model Kelly Sawyer as Romy and Michelle from "Romy and Michelle's High School Reunion."
A very pregnant Kim Kardashian West recycled her infamous 2013 Met Gala look. The floral print Givenchy by Riccardo Tisci gown the reality star wore while carrying her first child North West "still fits."
Meanwhile, over in New York City, Heidi Klum hosted her annual costume bash as Jessica Rabbit. Model Gigi Hadid nailed her Sandra Dee ensemble and the ever sultry Jennifer Lopez was also at the gathering as, what she called, "haute couture skeleton?"
Many revealed their costumes ahead of the holiday. Some sported onesies, a trend in recent years for a quick and easy Halloween costume.
Channing Tatum donned a Pooh Bear variation for his daughter’s Halloween carnival.
“Pretty sure I terrified all the children,” the actor wrote of his lumpy rendition of the classic Disney character.
Hugh Grant attempted the onesie look as well, to mixed results, showing up to UNICEF’s annual Halloween charity ball dressed as a lion.
The actor was teased for his lack of effort. BuzzFeed’s Christian Zamora tweeted, “No matter what, you’ll have a better costume than Hugh Grant this year.”
Kourtney Kardashian and her kids dressed as a superhero family. The reality star dressed as Wonder Woman, and her kids followed suit in their own hero costumes.
Their cousin North West joined in, dressed as a unicorn — though her mom, Kim Kardashian West, also shared a photo of her daughter in a different costume on Thursday.
“Elsa & Anna in the house!” wrote Kardashian West, sharing a photo of North and cousin Penelope Disick dressed as the stars of the Disney phenomenon.
If you're having trouble keeping up with the Kardashians, you're sure to be confused by a new addition to the famous family. Meet Karla Kardashian. Ellen DeGeneres debuted "the lesser known Kardashian sister” for season 13 ahead of her Halloween-themed episode on Friday.
The comedian wore prosthetic breasts with a low-cut animal print blouse, coupled with a black wig and huge glasses.
“Since I’m the younger sister I get all the hand me downs so these are Kim’s Shape Ups that I’m wearing, this is Khloe’s old blouse, and the booty is all mine,” joked DeGeneres about her ensemble.
Singer Ariana Grande appeared as a guest on DeGeneres's show on Friday in a cow costume. The two joked about whether it was difficult to sit down with udders.
Another celebrity-on-celebrity parody featured supermodel Chrissy Teigen as Food Networks’s Guy Fieri. The "Fab Life Show" host transformed herself into the celebrity chef, complete with blonde, spiky hair and his signature fire shirt.
Ciara’s birthday party this year was Halloween themed, featuring some great costumes by her celebrity guests.
The singer dressed as Batgirl, and was joined by fellow performers Kelly Rowland as Catwoman and Beyonce as X-Men’s storm. Serena Williams, Lala Anthony, and others also joined in.