NEW YORK, NY - OCTOBER 31: Heidi Klum (L) and Gigi Hadid attend her Halloween Party on October 31, 2015 in New York City. (Photo by Andrew Toth/WireImage)
WEST HOLLYWOOD, CA – OCTOBER 31: Alessandra Ambrosio attends ‘Alessandra Ambrosio’s Heaven and Hell Halloween Party’ presented By VOCO at 1OAK on October 31, 2015 in West Hollywood, California. (Photo by JC Olivera/Getty Images)
NEW YORK, NY – OCTOBER 31: Emily Ratajkowski attends the Heidi Klum Halloween Party on October 31, 2015 in New York City. (Photo by Andrew Toth/WireImage)
LOS ANGELES, CA – OCTOBER 30: Fergie and Josh Duhamel are seen celebrating Halloween in Beverly Hills on October 30, 2015 in Los Angeles, California. (Photo by AaronP/Bauer-Griffin/GC Images)
NEW YORK, NY – OCTOBER 31: Heidi Klum (L) and Gigi Hadid attend her Halloween Party on October 31, 2015 in New York City. (Photo by Andrew Toth/WireImage)
LOS ANGELES, CA – OCTOBER 30: Katy Perry is seen at Kate Hudson’s annual Halloween party on October 30, 2014 in Los Angeles, California. (Photo by Chinchilla/Bauer-Griffin/GC Images)
NEW YORK, NY – OCTOBER 27: TV Personality Kim Kardashian attends the 2nd annual Midori Green Halloween Party at Avenue on October 27, 2012 in New York City. (Photo by Michael Stewart/WireImage)
NEW YORK – OCTOBER 31: Singer Mariah Carey arrives at her Halloween party at Cain October 31, 2004 in New York City. (Photo by Evan Agostini/Getty Images)
LOS ANGELES, CA – OCTOBER 15: Seth Rogen attends Hilarity for Charity’s 5th Annual Los Angeles Variety Show: Seth Rogen’s Halloween at Hollywood Palladium on October 15, 2016 in Los Angeles, California. (Photo by JB Lacroix/WireImage)
NEW YORK, NY – OCTOBER 31: (EXCLUSIVE COVERAGE. SPECIAL RATES APPLY) Taylor Swift visits «The Elvis Duran Z100 Morning Show» at Z100 Studio on October 31, 2014 in New York City. (Photo by Kevin Mazur/Getty Images for The Elvis Duran Z100 Morning Show)
