Deep conceal makes some good shoulder holsters.
I have one and have had great luck with it
Holster is made of light canvas and is held on with velcro.
Wear a light under shirt and strap on the holster over the under shirt
A cowboy shirt that is a size larger than you usually wear
( avoid white due to printing all othe colors are ok stripes are very good)is great it can be unsnapp
quickly if you need access to your hand gun.their web site .
has a guide to measuring yourself to get the right size holster for you.
They have a chart on the web site that lists the type
of holster and what is compatable with your hand gun
welcome aboard
cost is less than $ 40.00I carry a short barrel Taurus 5 shot .357 ( I load it with 38 + P)