just found these today, how long have they been around? http://www.thinkgeek.com/tshirts/generic/95bc/
I dunno, but light up t-shirt = about the stupidest thing I ever heard of. save you money, but a TFW2005 one and don't get beat up.
dude, imagine the possibilities of that technology. imagine a shirt or jacket with panels all over that light up. add l.e.d.s and even digital paper and those people holding signs could just walk around wearing signs!
Those shirts remind me of a misquoted line in Bennie and the Jets by Elton John.. "Electric boobs.." They're alright if you want your chest to look like a Las Vegas display. I'd wear it..why not? Love, Heather