Mike "The Situation" Sorrentino
"Happy Halloween," Lauren Sorrentino shared on Instagram when posing with her husband. "Makeup: @lauren_damelio."
Tom Brady
"Thursday Practice Notes: Brady (QB) - Did Not Practice - Refused to take off stormtrooper helmet. #happyhalloween," the football stud joked on social media.
LIVE With Kelly & Ryan
Kelly Ripa and Ryan Seacrest pay tribute to Lil Nas X and Billy Ray Cyrus' "Old Town Road" classic hit.
True Thompson
"SwanLake with TuTu," Khloe Kardashian revealed on Instagram with a costume from Pottery Barn Kids. "Halloween look 1. You know I have many more to share."
Ryan Seacrest
"@Diplo here on the 1's and 2's filling in for Seacrest. Dropping some maj BPMs right now.... Lesss get it! #Halloween," the iHeartRadio host shared after On-Air With Ryan Seacrest.
Meghan McCain
"Come play with us.... #Halloween2019 #eviltwins #TheShining," The View star shared on Instagram with her co-hosts Joy Behar and Sunny Hostin.
Catelynn Lowell
"Jack jack and a T-Rex! Happy Halloween," the Teen Mom OG star shared on Instagram with a picture of her kids.
Good Morning America
The stars of ABC's morning show travel back to the '70s for a disco-themed Halloween.
Miranda Kerr
"Happy Halloween," the supermodel wrote to her followers while surrounded by monsters.
Mercedes "MJ" Javid
"Our little pumpkin," the Shahs of Sunset star shared on Instagram from the pumpkin patch.
Charlie Cox, Tom Hiddleston & Zawe Ashton
Loki becomes Daredevil, Daredevil becomes Loki and their Broadway co-star dresses up as Captain Marvel.
Tyler Hubbard
The Florida Georgia Line member and his wife Hayley Hubbard spread some Frozen magic before Halloween night.
Emily Simpson
"Who loves #Halloween as much as I do?!" the Real Housewives of Orange County star shared on Instagram. "I love this time of year! And how cute is my candy corn sweatshirt from @swirlboutique?!"
Sara Foster
"The one where the mom forces the kids to dress up as the cast of Friends with her for Halloween," the star captioned this adorable family snapshot while celebrating with Amazon Boxtumes.
Kylie Jenner
We're so hop-py the cosmetics mogul dressed up as a Playboy Bunny for Halloween this year.
Karlie Kloss
Is that you, Karlie? The model and entrepreneur enlists makeup artist Bob Scott to create this creepy doll look.
Gabrielle Union & Kaavia Union Wade
And the award for best mother-daughter costume goes to...
Ashley Graham & Justin Ervin
"Macho Man knocked up Jessica Rabbit for Halloween," the mom-to-be shared on Instagram.
Liza Koshy
Nailed it! The YouTube star goes as Anna Wintour for Halloween.
Eva Longoria
"My little Batman!!" the A-list actress captioned a photo of her son.
Jamie Foxx & Busta Rhymes
The duo perform Put Your Hands Where I Can See Snoop's Snoopahdelic's Halloween party at Poppy in West Hollywood.
Jade & Tanner Tolbert
"Just a couple of hound dogs. #elvis #halloween2019 #myhunkahunkaburningloves," the Bachelor in Paradise stars wrote on Instagram.
Demi Lovato
Sorry she's not sorry for having a blast at Universal Studio's "Halloween Horror Nights."
Jordyn Woods
Work it! The social media star channels her inner Cleopatra in a very sexy away.