Jason Aldean
"Happy Halloween from the 'Exotic Aldeans,'" the country singer shared on Instagram after participating in a photo shoot with Justin Mrusek.
Ayesha Curry & Steph Curry
"Happy Halloween from the Curry's," the NBA player shared on Instagram. "'Count'ing my blessings! Ha"
Dwayne "The Rock" Johnson
"One big family of lions: Mufasa, Nala and Kiara plus Foley the Cheetah from the Lion Guard for Halloween," Lauren Hashian shared on Instagram.
Celine Dion
"No tricks, only treats," the legendary singer shared on Instagram. "Happy Halloween everyone!"
Kandi Burruss
"We decided to take it back to @maskedsingerfox #season3," the Real Housewives of Atlanta star shared on Instagram when revealing her family's epic costumes.
Jessica Simpson
"Happy Halloween from our Pig, Mummy and Maleficent," the fashion designer wrote on Instagram when showcasing her children's looks.
Tyler Hubbard
"This is what happens when you let your 2 year old decide what you're going to be for Halloween," the Florida Georgia Line member wrote. "#woody #toystory."
Alicia Keys
"Fun times!" the Grammy winner wrote. "Happy Halloween!"
Dorit Kemsley
"Halloween 2020," the Real Housewives of Beverly Hills star wrote online.
Stephanie Hollman
With help from celebrity makeup artist Daniel Blaylock-Napolitan, Stephanie was able to channel one iconic Grease character. "Greased lightning," the Real Housewives of Dallas star wrote on Instagram. "Had so much fun creating this with my family."
Elizabeth Chambers
"An astronaut, Jojo Siwa and Wonder Woman," the actress wrote on Instagram. "Not a theme, but all American dream. Happiest Halloween from GC."
Brooke Burke
Halloween in 2020! The star's family goes trick-or-treating in Malibu with the help of the gita robot.
Rachel Lindsay
"Janet Jackson circa 1990," the Bachelor Nation star shared on Instagram while looking back on "Love Will Never Do without You."
Luke Bryan
"Who cut the cheese?" the American Idol judge joked on Instagram while dressing up with wife Caroline Bryan.
Dylan Barbour & Hannah Godwin
"Thank you @mondrianlosangeles for being my castle for the weekend," the Bachelor Nation star wrote on Instagram.
Jennifer Lopez & Alex Rodriguez
The two dressed up as '80s music icons Madonna and Bruce Springsteen.
Kaitlyn Bristowe & Jason Trawick
The Bachelor Nation couple dressed up as Jennifer Aniston and Brad Pitt from their 2020 virtual Fast Times at Ridgemont High table read benefit.
Russell Dickerson
"Hi-ho, the derry-o. The farmer ‘n the cow," Kailey Dickerson wrote on Instagram while celebrating Halloween with the country singer.
Bretman Rock
"Remember that one scene in Incredibles 2 when Edna Mode had to babysit JackJack...yeah that's how I feel every time I babysit my sisters kids lol @babywontons First Halloween with me," the beauty influencer and YouTuber wrote on Instagram.
Tarek El Moussa & Heather Rae Young
"Happy Halloween from our crazy family to yours!!!" the Flipping 101 star wrote on Instagram. "You may see these pirates around the streets of Newport Beach tonight...beware."
Patrick Schwarzenegger & Abby Champion
"We tried," the actor and model shared on Instagram when dressing up for the holiday.
Maci Bookout & Taylor McKinney
"'I'm outspoken, good looking, love to party and have fun. - Joe Exotic," the Teen Mom OG star wrote on Instagram. "#happyhalloween #2020cantstopwontstop #savethetigers #wetakehalloweenseriously."
Kelsea Ballerini
"I need to speak to the manager of 2020... #happyhalloween #karensofinstagram, the country music singer joked on Instagram.
Jenna Compono & Zach Nichols
"Happy Halloween," The Challenge stars shared on Instagram while wearing Tipsy Elves.