Trina O'Boyle of Drexel Hill, Pa., came across the idea on the Green Halloween website.
She explains, "i was just at the store yesterday and I was looking at costumes that were $35 to $40 and you use them once, they get stuck in the closet, and it's kind of a waste. When you have all these great cotumes that you can swap with your friends or with the community, like we're doing, it's really a great way to reduce trash and also save lots of money for families, especially in this economy."
The Costume Swap will be held tonight, Oct. 7, 2011, at 7:00 p.m. at the Swarthmore Community Center.
Jessica Mudrick of Wallingford, Pa., explains how it will work.
"When you bring a costume in, you're going to get a ticket for a costume that you can take out. If you bring two costumes, you can take two costumes. We also have vendors downstairs and we have raffle prizes."
Any costumes that are leftover will be donated to charity.
To find out more about the National Costume Swap, and to find if there's a swap going on near you, click here.