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TRISTAN, CHLOE & SPENCER TRUMP
Donald Trump Jr. wasn't too busy on the campaign trail to miss Halloween with his kids! His three youngest went as Captain America, Minnie Mouse and a police officer.
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MARLOWE & MAJOR MARTINO
Eva Amurri Martino's kids went under the sea to celebrate Halloween as Ariel and Flounder.
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VIVIANNE & ERIC DECKER
The whole Decker family took a trip to Neverland for Halloween this year.
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Justin Timberlake managed to convince his whole family to dress up as Trolls for Halloween — and they couldn't be cuter!
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Gisele Bundchen's son wanted to be Mario, and she won the Best Mom Ever award by stepping up to the plate as Luigi!
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NANCY & ADALAIDE KELLEY
For their last Halloween as a family of four, Katherine Heigl and Josh Kelley dressed up as a clan of vampires — and an unlucky beast!
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CAMDEN & BROOKLYN LACHEY
It's been a few years since Frozen came out in theaters, but that doesn't mean that the hype has died down! The Lachey family clearly still loves the movie, as evidenced by their Anna, Elsa, Olaf and Kristof costumes.
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EGYPT & GENESIS DEAN
Alicia Keys's little guys didn't need magic to create their epic Harry Potter and Batman costumes.
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D'LILA & JESSIE COMBS
P.Diddy was in the Halloween spirit! He dressed as the Mickey to his daughters' Minnies for the day.
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GIA & DOMINIC LOPEZ
The Lopez family did some father-son, mother-daughter matching for their Wild West themed costumes!
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ALIJAH & HANK BASKETT
The Baskett family went for video game-inspired characters — plus a little dinosaur — for a night of trick-or-treating.
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HARPER & HOLT SMITH
Tiffani Thiessen's kids went full-on Power Ranger (with mom and dad!).
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For her first Halloween, Jana Kramer's little girl is embraced the scary side of things — and got a little freaked out herself by her monster costume!
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CARMEN, RAFAEL & LEONARDO BALDWIN
What an Incredible costume! Alec and Hilaria Baldwin dressed up as everyone's favorite superhero family with their three little ones.
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HARPER & GIDEON BURTKA-HARRIS
The 6-year-old twins continued their family's tradition of dominating Halloween with a Hollywood theme that included Marilyn Monroe, Groucho Marx, Charlie Chaplin and James Dean.
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EVELYN & MABEL WILLIS
The kitty, 2, and the little witch, 4, daughters of Emma Heming and Bruce Willis, had a blast before trick-or-treating.
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KAI & SASHA SCHREIBER
Kai, 7, and Alexander, 9, took the scary Halloween route with mom Naomi Watts.
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KIYAN CARMELO ANTHONY
The 9-year-old offspring of La La and Carmelo Anthony stood at attention as a toy soldier.
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JAMES KNIGHT NEWMAN
Jaime King's 3-year-old proved he's a Nightmare Before Christmas superfan with a Jack Skellington costume.
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EMME & MAX MUÑIZ
Jennifer Lopez and Marc Anthony's 8-year-old twins went candy hunting as a cat and Bowser from Super Mario Bros.
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PENELOPE, REIGN & MASON DISICK
Mom Kourtney Kardashian led Penelope, 4, Reign, 2, and Mason, 6, in a Power Rangers squad.
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ERIC DECKER II
Jessie James Decker decked her 1-year-old out as Peter Pan while big sister Vivianne took on Tinker Bell.
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Warren, 5, and mom Jessica Alba paired up as genies.
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Chrissy Teigen tested out a handful of costumes for the 6-month-old's first Halloween, including hula girl, banana, peacock and Minnie Mouse looks.
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MOLLY SULLIVAN MANNO
The 3-month-old daughter of former Bachelorette Ali Fedotowsky and fiancé Kevin Manno was impossibly cute as an elephant.
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Brooklyn Decker and Andy Roddick's 1-year-old showed he's already a Star Wars fan in a Yoda costume.
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MONROE & MORROCAN CANNON
The 5-year-old twins celebrated with parents Nick Cannon and Mariah Carey as Rapunzel and Mario.
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Ivanka Trump and Jared Kushner's youngest, 7 months, earned "awws" as Mickey Mouse.
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Casey Wilson got into the election spirit by dressing 17-month-old Max up as Donald Trump.
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Chef Marcela Valladolid went with a candy corn ensemble for son David, 18 months.
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Birdie (daughter of Busy Philipps and husband Marc Silverstein) and her friend paid homage to Hamilton as the founding father and his wife, Eliza Schuyler.
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MEILANI & GREYSON MATHEWS
Jennin "JWOWW" Farley and her family, including daughter Meilani, 2, and Greyson, 5 months, stepped out as The Incredibles.
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Coco Austin couldn't help but try out a few costumes, including a lamb and Snow White, on her 11-month-old daughter with Ice-T.
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Warren, 8, and dad Cash made a more-cute-than-scary pair of pirates.
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Liv Tyler's 11-year-old "land shark" son couldn't wait for Halloween.
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SCARLETT & BROOKS STUBER
Scarlett, 1, and Brooks, 4, joined their expecting mom Molly Sims as PJ Masks' Owlet and Catboy.
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BLUE IVY CARTER
The 4-year-old got dolled up in an '80s throwback to Salt-N-Pepa with mom Beyoncé.