To celebrate Halloween many celebrities dressed up in various costumes for the fans.

Rookie duo 15& dressed up as witches, but instead of looking scary, the girls went for a cute look, sported gray and blue dresses instead of black, and donned a cute hat and "Halloween" hairband. The photos were uploaded onto their official Facebook with the caption,"15&'s Special Halloween Day with the fans. Jimin and Yerin dressed in cute Halloween costumes and shared candies with the fans :) Have a happy halloween, FB friends!"

B1A4 also dressed up in pumpkin-themed clothes for a goofy Halloween, making funny faces in the camera with cone hats, bat-wing hairbands, pumpkin capes and devil pitchforks.

SHINee's Key posted photos of himself as the Joker from Batman on his me2day, writing, "Today is Halloween. I'm going to enjoy it properly, yahoo". He was dressed in the full Joker getup, from the green vest, yellow tie and purple jacket to the makeup that covered his entire face as well as green hair dye, becoming almost unrecognizable.

BTOB's Peniel and Sungjae also tweeted funny photos of themselves celebrating Halloween with the words, "Even though its almost over.. Happy Halloween!" The two used special effects to comically enlarge sections of their faces.

Park Han Byul tweeted two photos of herself doing her own makeup, writing, "happy halloween~!! It's sad I don't have a white hanbok ?? but I'm satisfied kekekeke" and "I ripped one more place!! kekekeke it's so fun with just a lipstick and an eyebrow pencil".

Rainbow's Jisook wrote, "Euhehehehehehe It's Halloweeeeeeeeen~" and tweeted a photo of herself with no makeup at a Halloween store, trying on a hairband with horns and bat wings. Even though she was wearing no makeup, she still showed off her clear skin and innocent beauty.

2PM's Taecyeon tweeted a photo of himself with his face behind his cat phone cover, writing, "Happy Halloween!! What's the point in living when you can't have a little fun?? Have fun today dressing up as whatever you wanna be!! Yay!!!" and "Meow~ Are you working hard on Halloween too".

Check out the photos below, which costume is your favorite?

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[Thanks to everyone who sent this in!]