This was kicked around a few days back.
It is a tough call and a shirt that is a little large could get you in trouble.
§ 18.2-308. Personal protection; carrying concealed weapons; when lawful to carry.
A. If any person carries about his person, hidden from common observation,.....
If the gun is not easily seen it could get you a date before the man. :P
I use them at times andthey are not very comfortable. Iprefer to use apaddle-back holster and a light coat. Of a fanny pack and pretend it is still in style and hip to wear.