Get ready for Halloween with this hilarious vintage costume button! Featuring the phrase "This IS My Costume!" in bold letters, this pinback is sure to bring a smile to everyone's face. The perfect addition to any collection of funny pins or Halloween memorabilia, this button is a must-have for anyone who loves to celebrate All Hallows' Eve.

Whether you're dressing up as a classic monster, a pop culture icon, or something completely unique, this button is the perfect way to show off your sense of humor and get into the spooky spirit. So don't wait - add this vintage Halloween costume button to your collection today!