Celebrities stepped out in full costume in Los Angeles as they attended Kendall Jenner's Halloween party, reported People. The Kardashians star, 27, hosted a Halloween party at the Chateau Marmont on Saturday and the star-studded guest list included Billie Eilish, Channing Tatum and Zoe Kravitz. Eilish, 21, arrived at the celebration with her buddy Devon Lee Carlson, adorned in a faux shotgun, cowboy hat, and red wig. The "What Was I Made For?" singer channelled the Wild Wild West for the celebration by dressing in a blue-and-white gingham top, a traditional Western belt and brown slacks. Kim Kardashian Unveils Chilling Haunted House Decor for Her Halloween 2023 Party on Instagram.

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Billie Eilish's Costume

According to People, Tatum, 43, and Kravitz, 34, recreated Roman Polanksi's 1968 thriller Rosemary's Baby with the Magic Mike actor dressed in a light blue onesie with a bonnet and his girlfriend in a long white nightgown with a knife reminiscent of Mia Farrow's titular character. Megan Fox,37, wore a mini schoolgirl skirt, blazer, white collared shirt and red tie while carrying a notebook that said Death Note, the movie for which they based their costumes. Machine Gun Kelly, in full-face makeup, a black wig and black feathers and an all-black outfit, stepped out in their usual extravagant couples costume style.

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Natalia Bryant was also in attendance at Jenner's get-together, and the late Lakers player's oldest daughter dressed in an all-white ballet outfit a la Black Swan. Bryant, 20, wore a full tutu and a feather headpiece in her hair as she recreated Natalie Portman's character from the Oscar-winning film, reported People. Charli D'Amelio and Landon Barker, who dressed up as Romeo and Juliet, attended Jenner's party on Saturday as a date night. Kendall Jenner Opts for Sheer Top and Mini Skirt for Her Date with Bad Bunny in New York!

D'Amelio, 19, wore an all-white attire with high block heels and white wings, while Barker, 20, sported a knight-inspired dress with a mesh top and shoulder armour. Also in attendance at the model's Halloween party -- an annual event thrown by Jenner, who frequently celebrates both the holiday and her birthday, Nov. 3, in one joint event -- were Anastasia "Stassie" Karanikolaou and her boyfriend, TikToker Jaden Hossler, who dressed as Fight Club's Marla Singer and the Narrator, reported People.