Nicola Peltz Beckham
The Transformers: Age of Extinction actress transformed herself to a Playboy Bunny.
Janelle Monáe
The "Make Me Feel" singer had a bloody good time at a Cinespia screening of The Texas Chain Saw Massacre in Los Angeles.
Kelsey Anderson
Baby, baby, baby, oh! The Bachelor Nation star channeled Justin Bieber for a Halloween party.
Sarah Michelle Gellar
There were no cruel intentions as the Buffy the Vampire Slayer alum visited Knott's Scary Farm in Buena Park, Calif.
Becca Tilley & Hayley Kiyoko
Wicked is going to be a pop-u-lar Halloween costume—just ask the Bachelor Nation star and the singer, who dressed up as Glinda and Elphaba from the beloved musical.
Victoria Justice
The Nickelodeon alum dressed as the title character in 2002's Coraline.
Leni Klum
Leave it to Heidi Klum's daughter to celebrate Halloween early, dressing up as Pamela Anderson's Barb Wire character.
Ariana Madix & Harvey Guillen
So this is what they do in the shadows! The Vanderpump Rules star and the Magicians actor faced their fears at Universal Studios Hollywood's Halloween Horror Nights.
China Anne McClain
The former Disney darling brought out the big guns to channel Laura Croft.
Chris Colfer
The Glee alum dressed up as a vampire's victim—complete with bite marks on his arms—and quipped on Instagram, "I was a snack. Get it?"
Tom Sandoval & Victoria Lee Robinson
The Vanderpump Rules star and his girlfriend dressed up as characters from Scary Movie for a Halloween party in Los Angeles.
Pascal Ibgui
The Golden Bachelorette channeled his leading lady Joan Vassos, joking on Instagram, "Pascal, will you accept this rose?"
Sami Sheen
The OnlyFans model—who is Charlie Sheen and Denise Richards' daughter—stripped down as a Victoria's Secret Angel.
Antoni Porowski
The Queer Eye star was hot to go for Halloween, dressing his dog Neon up as Chappell Roan.
Travis Barker
The Blink-182 drummer found more than just the angel from his nightmare at Universal Studios Hollywood's Halloween Horror Nights.
Jordan Fisher
The Flash star kicked off the Reese's & KIT-KAT Choose Both Halloween campaign at lighting speed with his cute costume.
M. Night Shyamalan
Even though he's the mastermind behind The Sixth Sense, the director tapped into the Dark Knight trilogy for his Halloween costume.
Christina Milian
The singer dipped it low at Universal Studios Hollywood's Halloween Horror Nights.
David Dobrik
Ahoy to the YouTuber, who dressed up as a sailor to Pizzaslime's Halloween party in Los Angeles, where Casamigos cocktails were flowing.
Tatum Thompson
Khloe Kardashian posted this adorable photo of her and ex Tristan Thompson's 2 year old son in his Halloween pajamas from Zip N’ Bear, quipping on Instagram, "Someone is feeling festive."
Landon Barker
The son of Travis Barker and Shanna Moakler had a rockin' good time at Universal Studios Hollywood's Halloween Horror Nights.
Alix Earle
The influencer debuted a full body painted Cheshire Cat costume.
Heidi Klum
The Queen of Halloween started the countdown on Oct. 1, writing on Instagram, "30 more days…"
Vanessa Hudgens
To kick off spooky season, the High School Musical alum captioned this black-and-white Instagram photo, "Happy October 1st from me and my giant pumpkin."