The reality star, 40, looked every inch the princess as she dressed as a modern day Cinderella in a blue mini dress with a frilled hemline.
Kate Beckinsale was another famous face at the bash and turned heads in a skintight latex Pope costume.
A-list: Paris Hilton (left) and Kate Beckinsale (right) were among the stars who attended Vas J Morgan and Michael Braun’s Halloween party in Los Angeles
Paris’ costume also featured light blue sleeves while she added height to her frame with a pair of heels. Styling her platinum locks into loose waves, she completed her look for the event with a silver tiara.
Kate, meanwhile, put on a leggy display as she donned a latex leotard which she paired with a red and white mitre with an upside down cross.
The actress also sported a pair of white heels as she posed next to her friend who wore a latex nun costume.
Wow factor: Paris’ costume also featured light blue sleeves while she added height to her frame with a pair of heels. Styling her platinum locks into loose waves, she completed her look for the event with a silver tiara
Styling her platinum locks into loose waves, she completed her look for the event with a silver tiara
Party: Vas, Rebel Wilson (left) and several other attendees dressed as characters from Squid Game and posed as if they were playing Red Light Green Light
Stunning: Anastasia ‘Stassie’ Karanikolaou (right) caught the eye of onlookers as she transformed into Pink’s Lady Marmalade (pictured with Vas and Victoria Villarroel)
Sensational: All eyes were on Kate as she departed the party in her dramatic costume
Getting ready: Kate shared a snap of her preparations for the party on her Instagram account
Emma Roberts donned a pink and white clown costume which she paired with a matching hat and bright red ankle boots.
Meanwhile, host Vas, actress Rebel Wilson and several others dressed as Squid Game characters in teal tracksuits.
The sets from Squid Game were recreated by the Australian based phenomenon Booby Tape.
Anastasia ‘Stassie’ Karanikolaou caught the eye of onlookers as she transformed into Pink’s Lady Marmalade costumer for the 2001 Moulin Rouge hit.
Guests: Joe Jonas attended the bash with his wife Sophie Turner while fellow attendee Emma Roberts donned a clown costume
Fun: Pitch Perfect star Rebel struck a dramatic pose with her pal as she cut loose at the bash
The model also sported a silver statement chain necklace and a paired the racy look with black cut-out hot pants.
Joining Stassie was Kylie Jenner’s former assistant and actress Victoria Villarroel who dressed as Christina Aguilera in the Lady Marmalade music video.
Olivia Rodrigo looked incredible in a teal gown with a platinum blonde wig as she posed next to Paula Abdul who was dressed as Wilma Flintstone.
Joe Jonas attended the bash with his wife Sophie Turner and sported an all black outfit with a fake microphone.
Outfit: Joe Jonas sported an all black outfit with a fake microphone as he departed the bash with Sophie
Pals: Also in attendance at the bash was Demi Lovato (second from right) who opted for an all black look
Pose: Rebel hung out with film director Taika Waititi (left) who sported a black skeleton costume
Sophie looked incredible in a lime green mini dress and white top which she wore with a green sheer shawl.
The former Game of Thrones star added height to her frame with a pair of black leather boots while she let her locks fall loose down her shoulders.
Meanwhile, Robert Pattinson was one of the few attendees not dressed up as he arrived in a dark jacket with a blue shirt and beige trousers.
His girlfriend Suki Waterhouse donned a black leather jacket which she paired with a sheer patterned skirt.
Sensational: Paris’ costume also featured light blue sleeves while she added height to her frame with a pair of heels
Pals: Demi Lovato (left) and Tana Mongeau (right) looked like quite the pair as they made a sensational exit
Edgy: Demi (left) donned a jet black leather jacket and a coordinating military cap
Bombshell: Tana (right) flashed her toned pins in a charcoal leotard
Sexy: She slipped her pins into a pair of fishnet stockings and elevated her height with a pair of onyx boots
Vision: Ashley Benson was a vision in a striking red mini dress, which showcased her toned pins
Fashion forward: She coordinated her outfit with a pair of unmissable fiery heels
Woah! Taylor Hill transformed into the Corpse Bride while showing off her svelte waist in a white mini dress
What a pair! Her date looked dapper in a black tuxedo
Emerging: Paris Jackson looked spooktacular in a brown mini dress and a matching shawl
Stunning: The actress completed her outfit with a pair of suede walnut boots
Justin Bieber and wife Hailey were also among the attendees at the A-list bash, with the singer donning a chipmunk costume.
Hailey went for an all black look, sporting a leather jacket and matching boots along with a raven wig.
Celebrities enjoyed spooky cocktails curated exclusively by George Clooney and Rande Gerber’s Casamigos Tequila.
Scott Disick’s rumoured new love interest Elizabeth Grace turned heads in white lingerie that highlighted her incredible figure.
The model also donned a pair of clear heels and added to her look with a pair of white angel wings as she attended the bash alongside Tyga’s ex-girlfriend Amanda Trivizas.
Guests: Olivia Rodrigo and Paula Abdul posed for a snap while Paris was joined by Booby Tape CEO Bianca Roccisano