imported post
I carry a rather heavy semi-auto about the size and shape of a compact 1911. To CC in the summertime, I wear a tank top undershirt tucked into my jeans or shorts, and use a beltslide holster strongside. I then wear a large loose-fitting T-shirt over that to conceal it. It helps to have a holster and belt which doesn't let the pistol lean outboard and print; you want it tucked in close. It also helps to wear a darker colored T-shirt or at least one with a colorful pattern on it to breakup the outline.
This is usually good, since the tank top keeps the gun away from my skin, but on really hot and humid days wearing the 2 shirts is oppresive, so I just CC a NAA minirevolver in my pocket.
You can get colored tank top undershirts at Walmart for cheap, and as they are not white you don't look like you're wearing a wife-beater shirt.