While we look forward to seeing celebrities' elaborate Halloween costumes every year, we're even more excited about their kids' cute getups.
And this year didn't disappoint!
Neil Patrick Harris and David Burtka's 5-year-old twins, Harper and Gideon, are always among the most festive this time of year. This Halloween, the family channeled classic Hollywood, with the kids paying tribute to Marilyn Monroe and James Dean.
More Pop Culture videos
See how country superstar Brett Eldredge gives back to his hometown
Melissa McCarthy and husband Ben Falcone spotlight new show ‘Nobodies’
Al Roker and Northern Michigan University set Guinness record for freeze tag
Richard Dreyfuss talks about racially charged drama ‘Shots Fired’
Kourtney Kardashian and her little ones, meanwhile, honored the '90s: Mason, 6, Penelope, 4, Reign, 1, and mom all dressed as the Mighty Morphin Power Rangers.
Jennifer Lopez's 8-year-old twins went for two very different — but equally cute — costumes: Bowser from Super Mario Bros. and a cat.
Gisele Bundchen and her adorable son also opted for a Super Mario theme.
Jessica Alba and her 5-year-old daughter, Haven, dressed as the duo from Nickelodeon's "Shimmer and Shine."
Chrissy Teigen was among the first to get in on the action, sharing several photos of 6-month-old Luna getting into the spirit in the days leading up to Halloween.
For more Halloween fun, check out these adult celebrities' costumes!