Who says only kids can go trick or treating?

Some celebrity Halloween costumes this 2014 were a variety of cool, cute, creative, and downright hilarious. They didn't get candies but they certainly got the attention of their fans and the entire world.

Lucy Hale decided to be a Twitter bird while Taylor Swift grew a horn and wings to become a flying unicorn. Ellen Degeneres wore a wedding gown and dragged "George Clooney" around to channel the woman everyone wants to be, Amal Alamuddin.

Colton Haynes, on the other hand, hid his good looks with prosthetics and green makeup. Who would have thought that the 'Arrow' star would party in a Princess Fiona costume of all things?

With Beyonce dressing up as Janet Jackson, her daughter Blue Ivy wore a matching sparkly outfit in red to become the King of Pop. Her pink microphone topped off the adorable outfit. Jay Z's daughter, meanwhile, tiptoed around the house in a cute skunk costume.

Browse through the gallery to see more celebrity Halloween costumes 2014!