Advice: LiveAware Tank-tops

They run small. I ordered a medium. I'm a medium in many cases. Not this case. "Medium" is true if you are built like an athletic 14 year old girl. Which I am not. So, take your usual size and bump it up, say, two sizes. That makes me an X-Large. If you've seen me, and some of you have, there's your metric. I now endeavor to exchange my tank-top. Which, was going to wear to Austin for a weekend of badassed womendom and cooking... but alas. Still, one of these days..., foiled again..., and other 70's cartoon tag lines.