Halloween 2023: All the standout costumes from the stars

Plenty of stars showed off epic costumes this Halloween.

Mariah Carey delighted her fans with a Jessica Rabbit-inspired costume. She shared photos of her look on Instagram with the caption, "Happy Halloween! 🎃 #notyet," referencing her annual viral moment ringing in the subsequent holiday season.

Paris Hilton and Jessica Alba were were among the many who wore Britney Spears costumes, with both drawing inspiration from outfits Spears wore in her famous "Toxic" music video. Others also showed off looks inspired by famous styles Spears has worn over the years.

Many stars opted for costumes inspired by characters from classic films like "Happy Gilmore," "Grease" and more.

Check out a roundup of some standout celeb costumes below.

Taylor Lautner and Tay Lautner as Timothée Chalamet and Pete Davidson from a 2020 "SNL" sketch

Alix Earle as Jadis the White Witch from "The Chronicles of Narnia"

Rachel Zegler as Daphne from "Scooby-Doo"

Emma Kenney

Becky G in a "Corpse Bride" look

Camila Cabello as Mia Thermopolis from "The Princess Diaries"

Keegan-Michael Key and Elle Key

Mariah Carey as Jessica Rabbit

Zoë Kravitz and Channing Tatum as Rosemary Woodhouse and her baby in "Rosemary's Baby"

The Irwin family

Victoria Monét

Austin Butler and Kaia Gerber as Andy Warhol and Edie Sedgwick

Justin Bieber as a scuba diver and Presley Gerber in a "Fear and Loathing in Las Vegas" costume

Chloe Bailey as Catwoman

Ice Spice as Betty Boop

Cindy Crawford and Rande Gerber in "Grease" costumes

Jessica Alba as Britney Spears

Jordan Roth in a costume he described as "The Queen of Snow White & the 7 Circles of Hell"

Paris Hilton as Britney Spears

Paris Jackson as Old Gregg from "The Mighty Boosh"

Kelly Ripa and Mark Consuelos in Día de los Muertos (Day of the Dead) looks

Glen Powell and Chord Overstreet in "Talladega Nights: The Ballad of Ricky Bobby" costumes and Wells Adams and Sarah Hyland in 'Happy Gilmore' costumes

Megan Fox and Machine Gun Kelly in "Kill Bill" costumes

Padma Lakshmi in a look she described as "Little Red Riding Wolf"

Kate Beckinsale in a "Barbarella" costume

Paris Hilton as Katy Perry

Jodie Turner-Smith

Halsey in a siren look

Shaun White and Nina Dobrev as Slash and Axl Rose, and Miles Teller and Keleigh Teller