8 Portraits of Celebrities at Kendall Jenner's Halloween Party, Megan Fox and Husband Look the Most Unique and Scary!

First, there is the event organizer, KLovers. When taking a mirror selfie with Hailey Bieber and Laura Harrier, Kendall Jenner is seen dressed up as Marilyn Monroe with blonde curly hair that makes her look elegant. The supermodel showed off her look on Instagram by posting a photo and writing “Happy birthday mister president,” the iconic lyrics sung by Marilyn Monroe in 1962.

As for Kendall's bestie, Hailey Bieber dressed up as Pebbles from the 1960s cartoon, THE FLINTSTONES. As reported by PEOPLE Magazine, we can see Hailey wearing a red wig with a bob hairstyle. She also wore a green and black sleeveless top with a crop style. Hailey's blue mini skirt featured an orange belt with a bone design as the buckle.

Well, this one is really unique! This 43-year-old actor is not shy to wear a baby costume! As reported by PEOPLE Magazine, Channing Tatum wore a light blue onesie with a bonnet hat and red socks. In addition, Channing Tatum's girlfriend, Zoe Kravitz, wore a long white nightgown with a knife. Apparently, this couple dressed up as characters from the 1968 film ROSEMARY'S BABY.

Anti mainstream, Megan Fox and Machine Gun Kelly dressed up as characters from the film DEATH NOTE. Not only unique, but Machine Gun Kelly's creepy makeup successfully made the Halloween atmosphere more noticeable at the party. Unlike her husband, Megan Fox wore a mini skirt, blazer, white collared shirt, and a red tie like a schoolgirl while carrying a notebook that says "Death Note."

Halsey, a singer from New Jersey, apparently also attended the Halloween party at Chateau Marmont. She dressed up as a mythical creature, Halsey was captured on camera as a siren wearing a thin skirt, a white bikini top, and various accessories like seashells.

Not scary, Billie Eilish chose to dress up as a cowgirl wearing a blue-white checkered blouse paired with brown pants and a belt. The 21-year-old singer also wore a red wig, a cowboy hat, and a fake gun to add an extra touch to her costume.

Next, we have her rival Olivia Rodrigo, KLovers! Sabrina Carpenter apparently also chose to dress up as a character from a movie like other celebrities. However, not scary or unique, she actually chose a beautiful and feminine character. Do you know who Sabrina Carpenter dressed up as? Turns out, she wore a costume resembling Rapunzel from Disney's movie TANGLED.

American actor, Patrick Schwarzenegger, also attended the party dressed as The King of Rock and Roll, Elvis Presley. As reported by PEOPLE Magazine, Patrick wore a white jumpsuit with an eagle image on his chest while posing with his hand forming the peace sign. Not forgetting, Patrick also wore sunglasses to make his costume more similar to Elvis Presley.