Ice Spice

Ice Spice dressed up as cartoon icon Betty Boop for her iHeart Powerhouse 105.1 performance on Halloween Weekend.

Justin & Hailey Bieber

The Biebers arrived at Vas J. Morgan and Michael Braun’s Halloween Party in costume as Flintstones characters. For her Pebbles-inspired ensemble, Hailey wore a bright red wig with a neon-colored top and skirt. Her hubby went shirtless and sported furry, animal-print fabric around his waist à la The Flintstones‘ Bamm-Bamm.

Justin Bieber

The Biebers jumped — or should we say, dived — into many Halloween costumes this year. For the annual Casamigos Halloween Party in Beverly Hills on Oct. 27, Justin sported a snorkel mask and flippers paired with a floral shirt and pink shorts.

Camila Mendes & Rudy Mancuso

Camila Mendes got all dolled up in a sparkly Catwoman suit inspired by Julie Newmar’s portrayal of the feline heroine. The Riverdale star was accompanied by her boyfriend, Rudy Mancuso, who rocked a leather jacket.

Paris Hilton

Paris Hilton celebrated Halloween in pop star style! On night one of her Halloweekend, the new mom paid homage to her longtime friend Britney Spears, replicating the flight attendant look from her “Toxic” music video. 

The following evening, Hilton swapped out the iconic blue Pan Am ensemble for an all red mushroom costume. The funky fungi look comes directly from an outfit Katy Perry wears during one part of her Las Vegas residency.

Kelly Sawyer Patricof & Jessica Alba

Jessica Alba also channeled Britney Spears’ “Toxic” wardrobe at the Casamigos party. The Honey star boldly replicated the nude, sparkly bodysuit Spears wore in her music video. She completed the look with a bright blonde wig, silver stilettos and natural makeup.

Alba’s pal Kelly Sawyer Patricof also tapped Spears’ video style, wearing the classic schoolgirl look from her video “…Baby One More Time.”

Halsey

In their sheer, ruched skirt and white bikini top, Halsey looked like an ethereal siren straight from the sea.

Kendall Jenner

This year, the 818 Tequila founder masqueraded as Marilyn Monroe in a blonde wig, a simple black turtleneck and white pants. Jenner’s outfit was seemingly modeled after the Hollywood bombshell’s iconic 1953 Life magazine photo shoot.

The model gave her Instagram followers a look at the costume. “Happy birthday mister president,” Jenner captioned a carousel of solo shots, quoting Monroe’s legendary serenade of President John F. Kennedy.

Channing Tatum & Zoë Kravitz

Channing Tatum and Zoë Kravitz went in a creepier direction with their couple’s costume at Kendall Jenner’s event: The duo became key characters from Roman Polanksi’s 1968 thriller Rosemary’s Baby. The Magic Mike star was the infant himself in a blue onesie and bonnet, while his girlfriend accessorized her nightgown with a knife in hand, à la Mia Farrow’s titular role.

Billie Eilish

The “Happier Than Ever” singer wrangled up a cowgirl costume for Kendall Jenner’s Halloween party held at the Chateau Marmont. Eilish dressed in her wild western best, wearing a gingham top, a cowboy hat and a bold belt buckle. She even carried a faux shotgun and gun belt for extra fun.

At the event, Eilish posed with her friend Devon Lee Carlson, with whom she has a common ex in Jesse Rutherford. Last year, when the singer was still dating Rutherford, they poked fun at their age gap by dressing as a baby and an old man for Halloween.

Natalia Bryant

The late Kobe Bryant’s eldest daughter, Natalia, was graceful in a white ballerina costume that looked straight out of Black Swan. She wore the tutu and headpiece to Kendall Jenner’s West Hollywood bash.

Charli D’Amelio & Landon Barker

Charli D’Amelio and Landon Barker leaned into their romance as Romeo and Juliet from Baz Luhrmann’s 1996 film. The TikTok sensation wore angel wings while her boyfriend was a true knight in shining armor.

Megan Fox & Machine Gun Kelly

On Friday, Machine Gun Kelly and Megan Fox made a haunting appearance in Beverly Hills for the Casamigos Halloween Party. The pair dressed as characters from Quentin Taratino’s 2003 classic Kill Bill: Volume 1. The Transformers star donned a schoolgirl ensemble and black wig to be fictional assassin Gogo Yubari, and the rocker wore a yellow jumpsuit like Uma Thurman’s character in the film.

Patrick Schwarzenegger

Patrick Schwarzenegger brought the bling to Chateau Marmont as Elvis Presley. He rocked a bedazzled eagle on his white suit.

Kelly Ripa & Mark Consuelos

The Live! with Kelly and Mark co-hosts wore elaborate face paint and festive clothes for their matching Día de Muertos costumes at Bette Midler’s annual Hulaween Gala. Ripa wore a rosy headpiece above her blonde locks, which she braided with ribbons, while her husband suited up in a gold-embellished blazer.

Chloe Bailey

The singer looked sleek as ever at Bette Midler’s Hulaween event, where she wore a body-hugging latex Catwoman costume. Bailey shared some closer looks at her superhero style on Instagram, writing, “i’m dangerous baby 🐈‍⬛🐾.” 

Padma Lakshmi

The former Top Chef host perfectly fit this year’s Hulaween theme, Once Upon a Hulaween: Scarytales & Deadtime Stories. Lakshmi’s costume simultaneously captured Little Red Riding Hood’s crimson cape style and that of the Big Bad Wolf, with fuzzy ears and face makeup.

Awkwafina

Lakshmi’s mini-me Krishna came along as well, wearing a goth-style gingham getup. The mother-daughter duo was joined by Awkwafina, who turned up in a flame-patterned t-shirt and sunglasses as Guy Fieri.

Dylan Mulvaney

The viral TikTok star wore a cropped version of Snow White’s classic gown. Mulvaney swapped the draping skirt for a mini tutu and replaced the Disney princess’ capped sleeves with spaghetti straps.

Chrishell Stause, Emma Hernan and Chelsea Lazkani

The Selling Sunset stars donned some sultry, NSFW looks at the annual Casamigos costume event. The realtors each wore a set of lingerie and carried a sign in reference to the infamous game that inspired their costume trio.

Cindy Crawford & Rande Gerber

For Rande Gerber and Cindy Crawford’s annual Casamigos Halloween Party in Beverly Hills, the power couple dressed as Danny Zuko and Sandy Olsson from the 1978 iconic film, Grease.

Austin Butler and Kaia Gerber

The superstar couple showed up for Gerber’s parents’ Casamigos party dressed as ’60s icons Andy Warhol and Edie Sedgwick. The pair both opted for wigs to pull off Warhol and Sedgwick’s signature looks, with Butler wearing a black leather jacket atop his black turtleneck and Gerber in a seemingly faux-fur jacket. 

Jodie Turner-Smith & Nancy Gomez

As another guest at the star-studded Casamigos party, Jodie Turner-Smith dressed as school girl complete with braided pigtails, a black and white plaid skirt and a cropped blazer. Turner-Smith posed alongside actress Nancy Gomez who was dressed as a nun splattered in blood.

Victoria Justice

Victoria Justice is another star who chose to portray a legendary entertainer with her Halloween look this year. The Victorious alumna opted for a look inspired by Cher’s “Turn Back Time” music video, she noted on Instagram. The ensemble included a curly wig, sailor’s hat and a leather jacket.

Kelsea Ballerini

While stepping into hostess mode at a Halloween bash with The Original Donut Shop in New York City, Kelsea Ballerini rocked a hot pink cowgirl Barbie costume inspired by Margot Robbie’s look in the film.

Kourtney Kardashian

When searching for a baby bump-friendly Halloween costume this year, Kourtney Kardashian looked no further than her own family. The Lemme founder — who is expecting her fourth child — stepped into sister Kim Kardashian’s 2013 Met Gala look, which she wore while pregnant with North West.

Kourtney shared a series of photos to Instagram wearing the full-length floral gown — with her hair and makeup styled to emulate her little sister’s — along with the caption “Freaky Friday.”

Keke Palmer

For Keke Palmer’s first Halloween as a mom, it’s no surprise she incorporated eight-month-old Leodis “Leo” Andrellton into her look. In photos shared on Instagram, the Big Boss star is seen dressed as the Bride of Frankenstein while her son stands over her dressed as scientist Henry Frankenstein. “He gave me LIFE,” she wrote in the caption, referencing the roles from the classic monster movie. 

North West

Kim Kardashian and Kanye West’s eldest daughter North West pulled inspiration from her dad when choosing her Halloween costume this year. In videos shared to the TikTok account the 10-year-old shares with her mom, North is seen dressed as Kanye’s “Dropout Bear” mascot, wearing the exact costume seen on the cover of the rapper’s 2007 album, Graduation. 

Sarah Hyland and Wells Adams

At the Casamigos party, Sarah Hyland and Wells Adams posed for a fun photo, with the Bachelorette alum sporting a Boston hockey jersey while the Modern Family actress wore a blonde wig and sweater vest.

Kim Petras

While taking the stage during her Feed the Beast tour on Oct. 29, Kim Petras slipped into a pink costume — head piece included — to get into the holiday spirit.

Reneé Rapp

Reneé Rapp, — who has an upcoming performance on Halloween in Brooklyn — dressed as Pamela Anderson this year, pulling inspiration from Anderson’s 1999 VMAs look.

Zoe Lister-Jones & Florence Pugh

In this silly selfie shared to Zoe Lister-Jones’ Instagram Story, the actress is seen dressed as rooster alongside Florence Pugh who had transformed into Guy Fieri.

Madison Beer

Madison Beer stopped by David Dobrik’s Halloween party in L.A. on Oct. 27, wearing this corsetted top paired with a headband and mittens.

Megan Thee Stallion

Megan Thee Stallion went whimsical this year dressing as one of the flowers from Tim Burton’s Alice in Wonderland. “HOTTIEWEEN TIM BURTON THEMED,” the rapper captioned a series of photos shared to Instagram, which showed her in a pink flower headpiece and green jumpsuit.

Edward Norton & Shauna Robertson

Edward Norton and his wife Shauna Robertson channeled Victoria and David Beckham for the Casamigos party. The Asteroid City star wore a red Manchester United jersey and a sleeve of tattoos, while Robertson sported a little black dress and a black wig styled into a bob.