Thin Bulk T-shirts & Labels

[fashion.fashoff]

hey guys,
does anybody know of a good place to get cheap, thin cotton t-shirts in bulk, maybe in the garment district? my boyfriend and i are doing a screenprinting project and would like to find some that are as thin as james perse or thinner--semi-sheer even.
also, is there a place in the garment district that will make labels if we provide them with a TIFF or JPEG of our logo?
thanks