WATCH: Top Halloween costume trends
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.
MORE: The best last-minute Halloween decor, makeup 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
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Taylor Lautner and Tay Lautner attend the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Alix Earle as Jadis the White Witch from "The Chronicles of Narnia"
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Alix Earle attends the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Rachel Zegler as Daphne from "Scooby-Doo"
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Rachel Zegler attends the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Emma Kenney
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Emma Kenney attends the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Becky G in a "Corpse Bride" look
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Becky G attends the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Camila Cabello as Mia Thermopolis from "The Princess Diaries"
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Camila Cabello attends the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Keegan-Michael Key and Elle Key
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Keegan-Michael Key and Elle Key attend the 2023 Heidi Klum Hallowe'en Party at Marquee on Oct. 31, 2023 in New York City.
Mariah Carey as Jessica Rabbit
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Mariah Carey appears in a photo shared to her Instagram account on Oct. 30, 2023.
Zoë Kravitz and Channing Tatum as Rosemary Woodhouse and her baby in "Rosemary's Baby"
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Channing Tatum and Zoë Kravitz are seen arriving at Kendall Jenner's Halloween party on Oct. 28, 2023 in Los Angeles.
The Irwin family
Victoria Monét
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Victoria Monet attends Megan Thee Stallion's Hottieween Party on Oct. 28, 2023 in Atlanta.
Austin Butler and Kaia Gerber as Andy Warhol and Edie Sedgwick
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Kaia Gerber and Austin Butler attend the Annual Casamigos Halloween Party on Oct. 27, 2023 in Los Angeles.
Justin Bieber as a scuba diver and Presley Gerber in a "Fear and Loathing in Las Vegas" costume
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Justin Bieber and Presley Gerber attends the Annual Casamigos Halloween Party on Oct. 27, 2023 in Los Angeles.
Chloe Bailey as Catwoman
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Chloe Bailey attends Bette Midler's Annual Hulaween Bash, Oct. 27, 2023, in New York City.
Ice Spice as Betty Boop
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Ice Spice performs during iHeart Powerhouse 105.1, Oct. 28, 2023, in Newark, New Jersey.
Cindy Crawford and Rande Gerber in "Grease" costumes
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Rande Gerber and Cindy Crawford attend their Annual Casamigos Halloween Party on Oct. 27, 2023 in Los Angeles.
Jessica Alba as Britney Spears
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Kelly Sawyer Patricof and Jessica Alba attend the Annual Casamigos Halloween Party, Oct. 27, 2023, in Los Angeles.
Jordan Roth in a costume he described as "The Queen of Snow White & the 7 Circles of Hell"
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Jordan Roth attends Bette Midler's Annual Hulaween Bash, Oct. 27, 2023, in New York City.
Paris Hilton as Britney Spears
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Paris Hilton attends the Annual Casamigos Halloween Party, Oct. 27, 2023, in Los Angeles.
Paris Jackson as Old Gregg from "The Mighty Boosh"
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Paris Jackson attends the Annual Casamigos Halloween Party on October 27, 2023 in Los Angeles.
Kelly Ripa and Mark Consuelos in Día de los Muertos (Day of the Dead) looks
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Kelly Ripa and Mark Consuelos attend Bette Midler's Annual Hulaween Bash, Oct. 27, 2023, in New York City.
Glen Powell and Chord Overstreet in "Talladega Nights: The Ballad of Ricky Bobby" costumes and Wells Adams and Sarah Hyland in 'Happy Gilmore' costumes
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Glen Powell, Wells Adams, Sarah Hyland and Chord Overstreet attend the Annual Casamigos Halloween Party on Oct. 27, 2023 in Los Angeles.
Megan Fox and Machine Gun Kelly in "Kill Bill" costumes
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Megan Fox and Machine Gun Kelly attend the Annual Casamigos Halloween Party on Oct. 27, 2023 in Los Angeles.
Padma Lakshmi in a look she described as "Little Red Riding Wolf"
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Padma Lakshmi attends Bette Midler's Annual Hulaween Bash, Oct. 27, 2023, in New York City.
Kate Beckinsale in a "Barbarella" costume
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Kate Beckinsale is seen arriving to Vas Morgan and Michael Braun's Halloween Party, Oct. 28, 2023, in Los Angeles.
Paris Hilton as Katy Perry
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Paris Hilton is seen arriving to Vas Morgan and Michael Braun's Halloween Party, Oct. 28, 2023, in Los Angeles.
Jodie Turner-Smith
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Jodie Turner-Smith is seen arriving to Vas Morgan and Michael Braun's Halloween Party, Oct. 28, 2023. in Los Angeles.
Halsey in a siren look
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Halsey is seen arriving to Vas Morgan and Michael Braun's Halloween Party, Oct. 28, 2023, in Los Angeles.
Shaun White and Nina Dobrev as Slash and Axl Rose, and Miles Teller and Keleigh Teller
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Shaun White, Nina Dobrev, Miles Teller and Keleigh Sperry are seen arriving to Vas Morgan and Michael Braun's Halloween Party, Oct. 28, 2023, in Los Angeles.