This place is awesome!
I actually had no idea it even existed, until we drove by after a delicious lunch at Holy Smoke. We decided to pop in as I was looking for a Halloween costume, and were greeted at the door right away. The staff let us know the deal - all the books in the back are full of the costumes they carry, so you write down the number and they will bring it up for you to try on. Cool!
We browsed the large selection of accessories, masks, wigs, shoes, and more - then finally hit up the back area to check out the costumes. They have EVERYTHING! Although I felt that some costumes were way too expensive, the variety was awesome. You will definitely find what you're looking for here. The place was busy but it didn't feel chaotic or unorganized, and there was plenty of staff milling around ready to help.
Although I didn't end up purchasing anything here, I will definitely visit again in the future!