I have been looking for this information as well. I tend to wear skirts about 98% of the time. Most of them have simple elastic waist bands. I don't want to have carry in several different locations dependent upon my clothing, so I am looking for a method that will allow me to carry in most of my outfits. I would be glad for more information on carry options.
Or, you could OC with a belt over a skirt. Guys (me) see that, we see Jesica Alba from Sin City.
Wait, did I just say that. No, it was in my head. I'm ok.
You might take a look at the "kangaroo" type holsters; sort of a belly band with shoulder straps. The straps help support the weight of a decent handgun and limit shifting a bit. Worn under a shirt, however, it's not something you can get to very fast. Might think of it as deep concealment. Something to be aware of. It's a bit more accessible worn over a shirt, but under a vest.
Kangaroo Carry
Kangaroo Industries Undercover/Off Duty Shoulder Holster
Concealed Carry Holsters | Deep Conceal
I have one of these holsters and I had to add a second shoulder strap then connect the two together across the back of my shoulders to keep it from sliding off of my shoulder. I suggested that to the maker but I don't know if they made any changes to their design...