Here is my completed Batman costume! I'm really happy with how the whole thing turned out.
The utility belt was made by my mom. She made 4 small pouches that close with velcro, and have straps on teh back so they can slide on and off any belt easily. It was great, because I was able to hold my keys, ID, cell phone, camera, tampons and whatnot on me while most of my friends were only able to shove a few essential things in their bras.
I was also super excited about my boyfriend's Riddler costume. The question marks on his tie, hat, as well as one you can't see on his back and the mask are all cut out of a single purple t-shirt I found. I would have put on more, but, smart person that I am, I began sewing only an hour before he showed up at my place. :/
He attached the question mark to the top of his cane and spray painted it gold himself.
I think we were a pretty big hit. People passing us by going to various parties kept telling us they liked our costumes.