It's the spooky time of year where the sales of lollies and chocolates skyrocket and people around the world dress up as anything and everything.
Last year, Colton Haynes dressed up as Fiona from Shrek, complete with prosthetics and green paint.
How will the Teen Wolf, Arrow and San Andreas star top that this year?
By dressing up as Ursula, the evil Sea Witch from Disney's The Little Mermaid!
Haynes is even joined by his Arrow co-star, Emily Bett Rickards, as Sailor Moon.
And even Chloe Bennet from Agents of S.H.I.E.L.D. makes an appearance as a bag of groceries stuffed with such items as a box of Frosted Flakes cereal, tea bags, a can of soup, an apple, carrots and grapes.
Haynes even posted a video afterwards of him taking off the prosthetics (How is that even comfortable!).
While Colton Haynes might be frontrunner for the best costume of 2015, there is just under a week for some new entries including Beyonce as Storm from the X-Men!
That's one thing about living in Australia, we don't celebrate Halloween like they do overseas. While probably about 5-10% of Australians celebrate, it's pretty much non-existent over here, which greatly disappoints me because I have so many ideas!
None of which involve prosthetics!