Need some last minute Halloween costume inspiration? No worries, celebs are already dressing up for the 2014 festivities and might get your creative juices flowing.

Why wait until the sun goes down to dress up when you can be in costume all day? That seems to be the mantra for stars like Taylor Swift and 5 Seconds of Summer's Ashton Irwin, who posted pics of their awesome outfits early in the A.M.

Taylor has a hilarious (and adorably nerdy) sense of humor. Naturally, her 2014 costume was ... a pegacorn? Yep, that's a pegasus + a unicorn. Only Taylor.

While T. Swift was totally adorbs, other stars channelled their spooky sides. Just check out the makeup on Ashton Irwin. (Also, can we address that his hair is straightened? OMG. We love it.)

Check out all of your favorite celebs dressing up for Halloween 2014 in the gallery above! Bonus: You can also see more costumes from years' past!