By Wonderwall.com Editors
8:45am PDT, Nov 2, 2018
They're a "LEGO Batman" family! Justin Timberlake and Jessica Biel take son Silas trick-or-treating around New York City's Tribeca neighborhood on Oct. 31, 2018.
Heidi Klum and Tom Kaulitz donned incredible Fiona and Shrek costumes for Heidi's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Bella Hadid and The Weeknd — dressed as Lydia Deetz and Beetlejuice — attendHeidi Klum's 19th Annual Halloween Party in New York City on Oct. 31, 2018.
Naomi Watts and Liev Schreiber take their sons trick-or-treating in family animal costumes in New York City on Oct. 31, 2018.
Emily Ratajkowski — dressed as Raquel Welch's character from "One Million Years B.C." — attends Travis Scott's Halloween at the Weekend Unlimited Delilah Take Over party in Los Angeles on Oct. 31, 2018.
Lupita Nyong'o — as Dionne from "Clueless" — arrives at Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Mel B and friend Gary Madatyan — dressed as her Spice Girls bandmate Victoria "Posh Spice" Beckham and David Beckham — arrive at Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Padma Lakshmi — as Natalie Portman's ballerina character in "Black Swan" — arrives at Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Dylan Sprouse and Barbara Palvin attend Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Neil Patrick Harris and David Burtka — dressed as Westley and Inigo Montoya from "The Princess Bride" — arrive at Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Alessandra Ambrosio takes daughter Anja Mazur trick-or-treating in Santa Monica, California, on Oct. 31, 2018.
Model Winnie Harlow, dressed as RuPaul, arrives at Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
"Trolls" characters Daniel Sinasohn and Frankie Grande attend Heidi Klum's 19th Annual Halloween Party in New York City on Oct. 31, 2018.
EJ Johnson attends Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Kat Graham , dressed as The Mask, attends Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Kyle Maclachlan and wife Desiree Gruber attend Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
Harry Connick Jr. and daughter Charlotte Connick attend Heidi Klum's 19th Annual Halloween Party in New York City on Oct. 31, 2018.
Comedy stars Chris O'Dowd and wife Dawn O'Porter dress as whoopie cushions to attend Jonathan Ross' annual Halloween party in London on Oct. 31, 2018.
Fergie and son Axl Duhamel (not pictured) leave their house in Santa Monica, California, to go trick-or-treating on Oct. 31, 2018.
Designer Zac Posen, dressed as Willy Wonka, arrives at Heidi Klum's 19th Annual Halloween Party presented by Party City and Svedka Vodka in New York City on Oct. 31, 2018.
David Walliams arrives at comedian Jonathan Ross' annual Halloween party in London on Oct. 31, 2018.
"Life in Plastic, It's Fantastic.. 💕"–Kylie Jenner, who posted this picture to her Instagram story on Oct. 31, 2018
Alec Baldwin and Hilaria Baldwin go trick-or-treating in New York City on Oct. 31, 2018.
Hoda Kotb appears in costume on "Today" in New York City on Oct. 31, 2018.
Katy Perry appears dressed as a sloth on her way to "Live with Kelly and Ryan" in New York City on Oct. 30, 2018.
Bella Thorne and Mod sun arrive to halloween party dressed as Tiffany and Chucky from Bride of Chucky in Los Angeles on Oct. 30, 2018.
Ciara attends the BACARDI Liberate Your Spirits Halloween Bash with Ciara and Swizz Beatz in New York City on Oct. 30, 2018.
Christina Milian was decked out in Hello Kitty gear at the Galore Magazine party in West Hollywood, California, on Oct. 30, 2018.
Carson Daly appears in costume on "Today" in New York City on Oct. 31, 2018.
Savannah Guthrie appears in costume on "Today" in New York City on Oct. 31, 2018.
Bette Midler attends Bette Midler's New York Restoration Project 22nd annual Hulaween event at Cathedral of St. John the Divine in New York City on Oct. 29, 2018.
Erin Andrews dresses up for "Dancing with the Stars" Season 27 at CBS Televison City in Los Angeles on Oct. 29, 2018.
Jane Krakowski attends Bette Midler's New York Restoration Project 22nd annual Hulaween event at Cathedral of St. John the Divine in New York City on Oct. 29, 2018.
Carrie Ann Inaba dresses up for "Dancing with the Stars" Season 27 at CBS Televison City in Los Angeles on Oct. 29, 2018.
Rita Ora dressed up as Post Malone for the KISS Haunted House party in London on Oct. 26, 2018.
Joe Jonas posted a video of himself on his Instagram Story dressed as fiancée Sophie Turner's "Game of Thrones" character, Sansa Stark, before a Halloween party on Oct. 27, 2018.
Sophie Turner posted this snapshot of herself wearing an elephant costume to a Halloween party on Oct. 27, 2018.
Harry Styles showed his support for the Dodgers baseball team with his sporty costume for the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Joey Fatone and girlfriend Izabel Araujo attend the Casamigos Halloween party at CATCH Las Vegas at the ARIA Resort & Casino on Oct. 27, 2018.
Disney Channel stars Jenna Ortega and Asher Angel (dressed as Ariana Grande and Pete Davidson) attend Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Nina Dobrev attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Drake Bell attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Kyle Smith and boyfriend Christian Siriano attend The Misshapes Halloween party hosted by Ketel One Family-Made Vodka in New York City on Oct. 27, 2018.
Victoria Justice attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Actress Joey King, dressed as Voldemort, attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Nico Tortorella attends The Misshapes Halloween party hosted by Ketel One Family-Made Vodka in New York City on Oct. 27, 2018.
Rumer Willis and Scout Willis attend Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Alexa Chung attends The Misshapes Halloween party hosted by Ketel One Family-Made Vodka in New York City on Oct. 27, 2018.
Adam Lambert attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Ireland Baldwin attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Jonathan Scott attends the Casamigos Halloween party at CATCH Las Vegas at the ARIA Resort & Casino on Oct. 27, 2018.
Leona Lewis attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Taissa Farmiga attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Destry Spielberg attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Tyson Beckford (as a fireman) and J. B. Smoove (as Diddy) attend the Casamigos Halloween party at CATCH Las Vegas at the ARIA Resort & Casino on Oct. 27, 2018.
Frankie Grande attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Evan Ross attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Jamie King attends Just Jared's Seventh Annual Halloween Party at Goya Studios in Los Angeles on Oct. 27, 2018.
Rande Gerber, wife Cindy Crawford and George Clooney toast the Casamigos Halloween party at CATCH Las Vegas at the ARIA Resort & Casino on Oct. 27, 2018.
Lily-Rose Depp attended the V Magazine Halloween party presented by Chanel at Jane's Carousel in Brooklyn on Oct. 26, 2018.
Rande Gerber and Cindy Crawford rocked out with their daughter, Kaia Gerber, at the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Leonardo DiCaprio donned a clown mask for the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Gwen Stefani (dressed up as Sally from "A Nightmare Before Christmas") shared a video of herself smooching Blake Shelton (dressed as a sailor) during a kids Halloween-themed birthday party on Oct. 21, 2018.
Ryan Seacrest and Shayna Taylor dressed up as Karl Lagerfeld and Anna Wintour for the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Paris Hilton attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Nicky Hilton Rothschild channeled sister Paris Hilton for the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Diddy and Michelle Trachtenberg attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Paris Jackson attended the DDJF Costume for a Cause event in Los Angeles on Oct. 26, 2018.
Halsey (dressed as Poison Ivy) posed for a selfie with her pal, Miryam Lumpini, during her Gotham-themed Halloween party at The Majestic in downtown Los Angeles on Oct. 26, 2018.
Jonathan Barbara and Devon Windsor channeled a vintage Justin Timberlake and Britney Spears for the V Magazine Halloween party presented by Chanel at Jane's Carousel in Brooklyn on Oct. 26, 2018.
Olivia Munn attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Dave Grohl and Jordyn Blum attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Janice Dickinson dressed up as a flapper girl for the DDJF Costume for a Cause event in Los Angeles on Oct. 26, 2018.
Edward Norton and Shauna Robertson attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Brody Jenner and Kaitlynn Carter went retro for the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Zoe Kravitz looked like she was having a rough morning at the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Prince Jackson attended the DDJF Costume for a Cause event in Los Angeles on Oct. 26, 2018.
Lisa Rinna and Harry Hamlin attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Jane Seymour attendsedthe Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Charlotte McKinney attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Kelsey Grammer and Kayte Grammer attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Presley Gerber and Kaia Gerber attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Prince Jackson, T.J. Jackson, Taryll Jackson and Taj Jackson attended the DDJF Costume for a Cause event in Los Angeles on Oct. 26, 2018.
Rebekah Graf channeled Jennifer Lopez for the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Brandi Glanville attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
Karolina Kurkova attended the Casamigos Halloween party in Los Angeles on Oct. 26, 2018.
