Megan Fox & Machine Gun Kelly
The couple steps out ahead of Halloween.
Olivia Rodrigo
The singer appears as Betty Boop.
Doja Cat
Winnie Harlow & Shawn Mendes
The model and singer are all smiles.
Diddy
Why so ssssserious?
Justin Bieber
The singer is spotted at Vas Morgan's Halloween Party in West Hollywood.
Hailey Bieber
The model joins husband Justin Bieber at Vas Morgan's Halloween Party in West Hollywood.
Kim Kardashian
The star channels Mystique from X-Men at theKarrueche x Lenny S. Halloween party at TAO Los Angeles.
Frankie Jonas & Anna Olson
The Jonas Brothers' little brother and his girlfriend troll as Joe Jonas and ex Taylor Swift.
Chrishell Stause & G Flip
The Selling Sunset star and her partner pose together at the Casamigos Halloween bash.
Jana Kramer
"Spider-Man caught two witches #halloween," the country singer wrote online. "Neighborhood block party here we come. Costume #1. Any guesses for Halloween night?."
Megan Fox & Machine Gun Kelly
The two channel a 1995-era Pamela Anderson and then-husband Tommy Lee at the Casamigos Halloween party.
Ryan Seacrest
"Waiting for my Negroni… Sbagliato… with Prosecco in it," the LIVE With Kelly and Ryan co-host shared on Instagram. "#HouseoftheDragon #LiveHalloween."
Josh Duhamel & Audra Mari
The newlyweds arrive at the Casamigos Halloween party dressed as Anna Nicole Smith and her oil tycoon husband J. Howard Marshall.
Becca Tilley & Hayley Kiyoko
"Unexpected plot twist," The Bachelor star wrote on Instagram.
Chrishell Stause & Emma Hernan
The Selling Sunset stars pose together.
Rebel Wilson, Ramona Agruma, Jacob Andreou, Marissa Montgomery & Carly Steel
The couple, the Snap Inc. exec and the TV hosts come in a set.
Nick Lachey & Vanessa Lachey
The couple appears with their kids Camden, Brooklyn and Phoenix.
Rande Gerber & Cindy Crawford
The Casamigos co-founder and his supermodel wife appear together at the Casamigos Halloween party.
Kaia Gerber
The model, the daughter of Casamigos co-founder Rande Gerbe and supermodel wife Cindy Crawford, appears at the Casamigos Halloween party wearing Commando leggings.
Paris Jackson
The model, the late Michael Jackson's daughter, appears at her family's annual Thriller Night Halloween party at their home.
Prince Jackson & Molly Schirmang
Michael Jackson's son and his girlfriend attend the famous family's Thriller Night Halloween party.
Vanessa Hudgens
The actress appears at the annual Thriller Night Halloween party at the home of the late Michael Jackson's family.
Judd Apatow & Leslie Mann
The couple poses together at the Casamigos Halloween party.