ATTENTION HALLOWEEN LOVERS! Did you wear a costume one year that was so memorable you wish the whole world could see it? Well, if you send us photo evidence of your fun, freaky and/or fearless costume (that you wore once upon a time), it just may get selected to air on MTV during the Ulalume Halloween concert special on 10/30 @ 9p! Email your photo to castme@mtvu.com along with your name and contact info (phone number and email.)