If you're looking for an easy, yet cute costume, this Halloween cat dress is a great fit. People will know what you are as soon as you walk in, as the dress features a giant cat face on the front, complete with wide yellow eyes and white whiskers.
While you could wear this any day, this definitely fits a very Halloween theme as the dress is black, making you a black cat for the day -- people may be fearful you'll bring them bad luck. To complete this outfit, all you'll need are cat ears and maybe even fake stick-on whiskers of your own.
This cat dress is made out of velvet and is also long-sleeved, so if you go out trick or treating or out drinking for the night, you'll be fairly warm without a jacket.