From Heidi Klum to Lil Nas X, See the Best Celebrity Halloween Costumes of 2022

Halloween is officially over, but we're still looking back at all the extravagant costumes stars shared in honor of the spooky holiday. On Oct. 29, Robert Downey Jr. got into the holiday spirit early when he let his kids Exton (10) and Avri (7) shave his head in preparation for his upcoming HBO series "The Sympathizer." However, the kids wanted a pretty big favor in exchange for their help — they wanted their dad to become a human jack-o'-lantern. Thankfully, Downey was game, and he chronicled his transformation in an Instagram video captioned, "The things we do for our work… and our kids. #Sympathizer set ready."

Downey isn't the only celebrity who showed off this past Halloween. Hailey Bieber shared a glimpse of her pal Kylie Jenner's witchy costume from an episode of her "Who's in My Bathroom?" YouTube series. Megan Thee Stallion was also one of the first to get in the spirit, kicking off the month by popping a jack-o'-lantern on her head for a fun at-home photo shoot.

Keep reading to see how more stars, including Kim Kardashian, Kourtney Kardashian Barker, Megan Fox, Dua Lipa, JoJo Siwa, Vanessa Hudgens, Brooklyn and Nicola Peltz Beckham, and more dressed up this year.