Here's a shirt you can wear bass! It'll set you apart!
Also, for Cons and shit like that, I think the easiest way too meet eachother is to find a restaraunt near the convention center and getting breakfast there. It allows you try chill out and talk to each other, it wont be a crowded mess, and you then get to not eat overpriced convention food
I wish I wasnt as huge as I was, i'd cosplay at conventions a lot more, but I have a hard enough time finding regular clothes that fit, and have no skills at creating clothing. If I could skinny up a lot I could do a mean Jotaro