Liv Tyler
Bun in the oven? Genius! "Halloween school dance. My favorite party!!!!!" she shared.
Derek Hough & Bethany Noel Mota
Somebody's "bout to get scuurrred !!!" at a Los Angeles haunted house.
Brooke Burke-Charvet
"Arabian Night. #fantasy. Pre Halloween fun," the actress wrote on Instagram after getting all dressed up.
Afonso Ribeiro
In between Dancing With the Stars practices, the actor takes his son to Mr. Bones Pumpkin Patch.
Shay Mitchell
The Pretty Little Liars star heads to Universal Studios Hollywood for a scary night of thrills. "There goes my voice! But it was all worth it...!@HorrorNights #UniversalHHN @Unistudios," she wrote.
JWoww
How cute is the Jersey Shore star's baby girl? "Seriously ma? A bumblebee," the MTV star wrote on Instagram.
Bill & Giuliana Rancic
Best couple's costume ever?! "I finally got my trendy butt implants! So worth the pain. Thank u Dr Rancic:) #halloween2014 @billrancic," the E! News host wrote on Instagram.
Kate Hudson
"Halloween baby! @iamsarafoster @itserinfoster @heather_parry @itsashbenzo," the actress shared on Instagram before attending a party .
Chris Colfer
Well this is easily the best Grumpy Cat costume we've seen so far.
EJ Johnson
Work it, EJ. The #RichKids of Beverly Hills star has one fabulous costume. "Beware the wicked #mspenguin #halloween #teamthis glam : @smilesandhoney5," he shared.
Kyle Richards
No stranger to going big for the holidays, the Real Housewives of Beverly Hills star decorates her home with her friend.
Lindsay Price
Who's ready to dress up?! "This is what happens when you let an almost 3 year old choose everyone's costume off the top of his head," the actress wrote on Instagram. "I don't know who got it worse sexy mama bear or daddy killer whale. Not pictured, baby Emerson the hot dog. #haloween #onlineshopping"
Todd Chrisley
Despite living in Atlanta, the Chrisley Knows Best star couldn't help but take two of his kids to Mr. Bones Pumpkin Patch in West Hollywood, Calif.
Teresa Palmer
"Pumpkin pickin @likemark #firsthalloween," the actress wrote while at the neighborhood pumpkin patch.
Naya Rivera
The Glee star dresses up as a beautiful bride for a holiday party. "Always a Dorsey," she wrote on Instagram.
Paris Hilton
What costume did the heiress and reality star wear for Halloween 2014? She was a mouse. Duh.
Paris Hilton
She also dressed up as a Playboy Bunny, as seen in a pic posted on Instagram.
Nick & Vanessa Lachey
"Boney Kisses!" the couple wrote on Instagram while dressed up. "Twas a Spooktacular evening in the Lachey Boneyard."
Alessandra Ambrosio
The supermodel takes her kids and friends to the pumpkin patch in Los Angeles. "#sundayfunday #calilife," she captioned.
Emma Roberts
The actress gets into the Halloween spirit while enjoying a spooky dinner.
Ashley Benson
The Pretty Little Liars star wears some spooky makeup!
Ivanka Trump
Too cute! "Pumpkin patch kid," the daughter of Donald Trump writes while snapping a photo.
Kourtney Kardashian
Things are getting spooky at Disneyland. "Visiting with dear friends Jack and Sally outside by the pet cemetery. #hauntedMansion #disneyland," the E! star wrote on Instagram.
Lori Loughlin
The Full House star is a full-on Pirate for Halloween.