People.com Entertainment Music The New Queen of Halloween! See All the Photos from Demi Lovato's Spooky 'It' -Themed Party From Kate Beckinsale to Ashley Graham, all the stars turned out for Demi Lovato's epic Halloween blowout By Melody Chiu Melody Chiu Instagram Twitter Melody Chiu is a Senior Editor for PEOPLE. She has been with the brand since 2009, editing, writing and reporting across all entertainment verticals. She oversees PEOPLE's music and events coverage and has written cover stories on Taylor Swift, Selena Gomez, Melissa McCarthy, Blake Shelton and Sandra Oh. The Los Angeles native graduated from the University of Southern California and has appeared on Extra!, The Talk, Access Hollywood and Good Morning America. People Editorial Guidelines Published on October 28, 2019 12:40 PM Share Tweet Pin Email 01 of 11 Angelo Kritikos On Saturday night, Demi Lovato threw an epic Halloween party at SBE's Hyde for her friends and family. "She threw the party because she was inspired by the It sequel and had never dressed up as Pennywise," says a source close to the star. "The full look took about three hours to complete!" 02 of 11 Angelo Kritikos Fully committing to the theme, the star transformed Hyde's entrance into a clown maze complete with stilt walkers and characters jumping out to scare her guests. 03 of 11 Angelo Kritikos Paris Hilton completed her school-girl uniform with pigtails. 04 of 11 Angelo Kritikos YouTuber Nikita Dragun dressed up as an anime character. "i bet y’all never seen a bitch ninja run in 8 inch heels," she wrote on Instagram. 05 of 11 Angelo Kritikos Meanwhile, Travis Barker fit right in with a clown get-up. 06 of 11 Angelo Kritikos Draped in pearls, Kate Beckinsale looked chic while channeling Audrey Hepburn in Breakfast at Tiffany's. 07 of 11 Angelo Kritikos Jameela Jamil cozied up to Lovato in her nun outfit. 08 of 11 Angelo Kritikos Expecting her first child, Ashley Graham (with husband Justin Ervin) looked sultry as ever dressed up as Jessica Rabbit. "Macho Man knocked up Jessica Rabbit for Halloween," she wrote on Instagram. 09 of 11 Angelo Kritikos Singer Ally Brooke — dressed as Cat Woman — reunited with Lovato at the bash. 10 of 11 Angelo Kritikos To keep her guests happy and full, Lovato served Umami Burger sliders and two kinds of fries. 11 of 11 Demi Lovato. Angelo Kritikos Guests also stayed hydrated with Fiji Water and tucked into a Sugar Factory candy bar stocked with festive Halloween gummies and candy corn.