See All of Your Favorite Fashion People's Halloween Costumes

Billie Eilish proved to be a popular inspiration.
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Nina Dobrev as Billie Eilish at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Nina Dobrev as Billie Eilish at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Though Halloween doesn't officially arrive until Thursday, the weekend leading up to Oct. 31 was packed with festivities in celebration of the spooky holiday. Our favorite fashion people dressed up in their best and most over-the-top costumes, from Stormi Webster as Kylie Jenner at the 2019 Met Gala to Jessica Biel as *NSYNC-era Justin Timberlake — curly-haired wig and all. 

Billie Eilish proved to be a popular inspiration this year, with Nina Dobrev donning the singer's signature bright green roots and Jameela Jamil wearing an Eilish-approved baggy ensemble as well. Elsewhere, celebrities concocted their own versions of other pop icons: Lisa Rinna recreated J.Lo's viral Versace look, and Kylie Jenner and and her best friend Anastasia "Stassie" Karanikolaou paid tribute to Britney Spears and Madonna at the 2003 MTV Music Video Awards. 

Below, we've rounded up Halloween looks from the 2019 celebrations so far. Be sure to check back, as we'll be updating this post with more looks as they keep coming over the next few days.

Rande Gerber as a hippie and Cindy Crawford as a disco queen

Rande Gerber and Cindy Crawford at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Rande Gerber and Cindy Crawford at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Laverne Cox as a warrior 

Laverne Cox at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Laverne Cox at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Amber Valletta as a '60s girl 

Amber Valletta at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Amber Valletta at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Zoey Deutch as a hippie

Charlotte Dawes and Zoey Deutch at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Charlotte Dawes and Zoey Deutch at the 2019 Casamigos Halloween Party. Photo: Michael Kovac/Getty Images for Casamigos

Lisa Rinna as Jennifer Lopez in Versace 

Lisa Rinna at the 2019 Casamigos Halloween Party. Photo: Kevin Mazur/Getty Images for Casamigos

Lisa Rinna at the 2019 Casamigos Halloween Party. Photo: Kevin Mazur/Getty Images for Casamigos

Paris Hilton as a saloon girl 

Paris Hilton at the 2019 Casamigos Halloween Party. Photo by Kevin Mazur/Getty Images for Casamigos

Paris Hilton at the 2019 Casamigos Halloween Party. Photo by Kevin Mazur/Getty Images for Casamigos

Heidi Klum as an alien

Heidi Klum at her Annual Halloween Party at Cathédrale. Photo: Gotham/Film Magic

Heidi Klum at her Annual Halloween Party at Cathédrale. Photo: Gotham/Film Magic

Barbara Palvin and Dylan Sprouse as Princess Mononoke characters

Barbara Palvin and Dylan Sprouse at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Barbara Palvin and Dylan Sprouse at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Kevin Herrington and Antoni Porowski as Blockbusters zombies

Kevin Herrington and Antoni Porowski at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Kevin Herrington and Antoni Porowski at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Halima Aden as Maleficent 

Halima Aden at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Halima Aden at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Duckie Thot as a dominatrix

Duckie Thot at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Gotham/FilmMagic

Duckie Thot at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Gotham/FilmMagic

Jonathan Van Ness as a bloody cat

Jonathan Van Ness at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Jonathan Van Ness at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Neil Patrick Harris and David Burtka as Mary-Kate and Ashley Olsen

Neil Patrick Harris and David Burtka as Mary-Kate and Ashley Olsen at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Neil Patrick Harris and David Burtka as Mary-Kate and Ashley Olsen at Heidi Klum's Annual Halloween Party at Cathédrale. Photo: Taylor Hill/Getty Images

Ashley Graham as Jessica Rabbit 

Nina Dobrev as the Chanel catwalk crasher

Camila Mendes as "Sexy Rick" 

Georgia Fowler as Maleficent

Josephine Skiver as a bee

Jasmine Tookes as a Pirate

Kylie Jenner and Anastasia "Stassie" Karanikolaou as Britney Spears Madonna at the 2003 MTV Music Video Awards

Kylie Jenner as Ariel

Stormi Webster as Kylie Jenner's custom Met Gala look 

Jessica Biel as *NSYNC-era Justin Timberlake 

Kate Beckinsale as Holly Golightly 

Aurora James as Catwoman 

Bella Thorne as a '70s disco queen

Jameela Jamil as Silly Eilish 

Nina Dobrev as Billie Eilish

Emma Chamberlain as Paris Hilton 

Normani as Naomi Campbell 

Normani as Cher

Ciara and Russell Wilson as Beyoncé and Jay-Z

Kim Kardashian as Elle Woods

Khloe Kardashian as Cruella de Vil

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