Gisele Bundchen
"Hope you all had a great Halloween!" the supermodel shared. "Arrr from the Tampa Bay pirates!!!"
Jessica Biel & Justin Timberlake
"Last night at MAGIC hour," Jessica captioned her Halloween post.
Ayesha & Steph Curry
"A monster mash of love!" the best-selling author wrote on Instagram as her son Canon wore a T-Rex costume from Pottery Barn Kids.
Sophia Grace & Rosie
"We decided to go as Sophia Grace & Rosie!" the viral stars wrote on Instagram. "#halloween #sophiagraceandrosie #ellen @theellenshow therealsophiagrace @nickiminaj."
Dylan Dreyer
The Today show meteorologist shows off her baby's Pottery Barn Kids costume while celebrating with Hoda Kotb's family.
Meghan King Owens
"This was the first Halloween in which everyone participated and also the most incredible amount of work and energy for the mama," the former Real Housewives of Orange County star wrote. "Dark nights, candy, and streets with cars combined with 3 preschoolers is a recipe for stressful parenting. But we survived and the kids LOVED it."
Lil Nas X
The Call Me By Your Name singer kills it as the Harry Potter villain Voldemort.
Kerry Washington
"Power to the people," the Scandal star wrote while wearing Privé Revaux sunglasses. "My #Halloween attempt (with the help of #AngelaDavis) to remind you all that Election Day is in 2 days! Use your power. Use your voice. Use your vote!!!!"
Kim Kardashian
"It looks so good!" the former Keeping Up With the Kardashians star said of her space cowboy glam, courtesy of make-up artist Ash Holm.
Carrie Underwood
"I'm not sure what 3 out of 4 us are supposed to be, but HAPPY HALLOWEEN!" the American Idol winner wrote online. "Be extra spooky and extra safe out there!"
Witney Carson
"Leo as Dash ARE YOU KIDDING ME?!!" the Dancing With the Stars pro asked.
Miranda Lambert
"Happy Halloween from Charlie and Maverick. #topgun," the country singer shared while posing with her husband Brendan McLoughlin.
Charli D'Amelio
The TikTok star channels her inner Lady Gaga with Privé Revaux eyewear.
Jade Roper & Tanner Tolber
"We're off to see the Wizard! #happyhalloween," the Bachelor in Paradise stars captioned on Halloween night.
Maklemore
"My kids really thought they were gonna beat me at Halloween," the Grammy winner shared. "30 min later I emerged from my closet to remind them who their pops is [goat emoji]."
Serena Pitt & Joe Amabile
"Back from the dead," the newly engaged Bachelor in Paradise stars wrote online.
Ariana Madix
"It's giving… Cher," the Vanderpump Rules star wrote while posing with boyfriend Tom Sandoval.
Andy Cohen
"We went to SPACE tonight!!!!" the Watch What Happens Live host revealed as his son wore a Pottery Barn Kids costume. "Also, he LOVES lollipops! #Halloween."
Maci Bookout
"It's-a Mario time!" the Teen Mom OG star wrote on Instagram.
Josh Altman
"Happy Halloween!!!!" the Million Dollar Listing star wrote. "We ain't clowning around when it comes to selling houses...."
Chris Lane
"Happy Halloween from Rip Beth and John," the country singer wrote on Instagram.
Katy Perry & Orlando Bloom
"I vaxed a girl and I liked it," Orlando wrote while dressed as Dr. Anthony Fauci.
Chrissy Teigen & John Legend
With help from Kiersten Stevens, this family Halloween costume is legendary.
Janelle Monáe
And the award for best Grinch costume goes to this Grammy nominee!