Does anyone know where I can purchase a Navy Seals shirt?

I'm very physically fit, and I'm going out on a first date with a girl who is smokin' hot and I think I have a chance with, I told her I'm in the Navy Seals, I want to wear a casual t-shirt that says something about the seals so she thinks I'm one.. I checked my local army surplus and they didn't have one. I might buy army fatigues as well...