Shit...........go to Wal-Mart/K-Mart and get some Dickies White T's. That is where I get mine. But I wear mine as under-shirts. I like the Dickies Shirts because they are tight around the neck and stay that way for a year or less.
champs is where its at......buy a normal XL Tall Tee.....yep...they like 4 for 20 bucks...white..blue...red...black...pink....well maybe not pink...but hit champs up..
the only white t's i wear are stafford white t's from jc penneys........they expensive but they feel good on.....and they last for a while i still got some from i dont even know when