Princess Beatrice of York
The royal celebrates Halloween while giving back at the Unicef UK Halloween Ball in London.
James Van Der Beek
"Bouncy castles make parenting more fun," the actor wrote on Instagram after visiting Mr. Bones Pumpkin Patch.
Millie Bobby Brown
The Stranger Things star encounters two grave diggers at Walt Disney World's Magic Kingdom Park.
Ariel Winter
You can't scare her! The Modern Family star doesn't seem fazed by the monsters (yet) inside Universal Studios Hollywood.
Kylie Jenner & Tyga
It's not Halloween for this couple without a stop to Horror Nights at Universal Studios Hollywood.
Stassi Schroeder
The Vanderpump Rules star steps out to attend the 8th Annual Los Angeles Haunted Hayride: Secret Society VIP Night.
Hilary Duff
"Shhh. Don't tell anyone, but I'm dipping into my Halloween candy early!" the Younger star wrote on Instagram.
Andrea Barber
The Fuller House star gets into the holiday spirit at the Rise Of The Jack O'Lanterns event inside the Los Angeles Convention Center.
Ashley Tisdale & Vanessa Hudgens
Wildcats in the house! The High School Musical co-stars attend Horror Nights at Universal Studios Hollywood.
Ronnie Ortiz-Magro
The Jersey Shore star is ready for a night of thrills at the Los Angeles Haunted Hayride.
Alessandra Ambrosio
Pumpkin picking has officially arrived and the supermodel couldn't be more excited.
Aubrey O'Day & DJ Pauly D
Get crazy, get loud! It's date night at Universal Studios Hollywood Halloween Horror Nights.
Holly Madison
"We can live like Jack and Sally if we want..." the best-selling author wrote on Instagram. #Disneyland #NightmareBeforeChristmas #rainbowaurorarotella #cousins #neworleanssquare #jackskellington #sally
Amanda Stanton & Josh Murray
"Halloween season is our fave!" the Bachelor in Paradise stars shared on social media. "Does anyone have any family costume ideas for us?"
Chris Hardwick
The Talking Dead star may have just found the perfect attraction at Universal Studios Hollywood.
Bridget Marquardt
Here for the boos! The former Girls Next Door star attends The Queen Mary's spooky Dark Harbor Halloween event.
The Walking Dead Cast
Lauren Cohan, Alanna Masterson, Seth Gilliam, Ross Marquand and Jordan Woods-Robinson experience The Walking Dead haunted house at Universal Orlando's Halloween Horror Nights.
Vanessa Hudgens
Bring on the monsters! The Grease: Live star shows no fear at Knott's Scary Farm...yet.
Kelly Clarkson
The American Idol winner stops by the Disneyland Resort to celebrate Halloween.
Lamar Odom
The former Los Angeles Lakers player is all smiles at Universal's Halloween Horror Nights.
Kellan Lutz
You can run, you can wear a Fitbit Blaze, but the Twilight star can't hide from the monsters inside Knott's Scary Farm.
Jamie Lynn Sigler
"Happy first day of Fall!" the actress shared on Instagram. "Anyone else excited for #PumpkinSeason???"
AnnaLynne McCord
Before meeting with close friends including Shenae Grimes, the actress poses for photos with Knott's Scary Farm performer Elvira.
NEXT GALLERY: Best Celebrity Halloween Costumes