Great idea. Here is a FWIW bit of info. The link below offers the absolute best quality mens T's that I've ever seen.
The graphics are great quality, albeit the content of the graphics leave quite a bit to be desired.
I'd like to suggest you check out one of these Ts if possible. I mean acutally pick one up for the quality. If you could find out a source for these things and add pool graphics you'd definitely have a great product!!
I think there's a case of trademark infringement with Vette. Note the harassment thread below to see how ugly this can get. Just trying to save you and vette some hurt feelings. Maybe you can come to an amicable solution.
I keep looking at your shirt designs, to judge them of course, but I keep forgetting what the shirts look like... You might want to try a few more, just for good measure. lol