Well as much as it pains me to admit it TBN's youth network JCTV (yes, I realize the corny sounding name) actually has a link to a store where one can buy clothes that witness (you know because that preaching the Word of God thing is so like totally out dated) and I have to say most of the products were not bad.
This one is a girl's shirt that I thought "I wish they had that when I was 15" (i'm a old 20 now).
Doctrine > Desires > Girls Christian Shirts @ C28
All of the clothes were modest and non-revealing and no heresy on them. For a TBN affiliated thing, I think they deserve my congrats.