Hoi Polloi, the way you're holding the gun in your picture above suggests that a holster of the "SOB" (small of back) variety may be the kind of thing to suit you. They tend to be (but not always ) OWB, but they are around behind where they are well concealed but easily accessible.
Here is a picture of a slender framed woman, from behind, with a Desantis OWB SOB holster. Her pistol is dimensionally larger than the PT111 you're holding in your picture, so the corresponding holster would be smaller (and flatter)....
Here's a galco version of the same idea:
And lastly, here is an IWB version of an SOB holster from D.M. Bullard:
The D.M. Bullard holster has the advantage of having a slot for an extra magazine. Of course, all of these are available for a number of different pistol brands/models/sizes, and most reputable manufacturers offer some kind of SOB holster, so you would have to do some research, but this might be a viable alternative to consider.
My last piece of advice, for what it's worth, is to build your carry method around your gun choice, and not the other way around. Pick the gun first, for its various virtues that matter to you (i.e. the best combination of weight, caliber, size, and capacity that makes sense to you), and
then pick the means to carry it. Since there are lots of different carry options for almost every kind of pistol made, I think you'll find this approach less limiting without decreasing your protection options.
OTH, the gun you carry with you beats the one you left at home.
“Hard times create strong men. Strong men create good times. Good times create weak men. And, weak men create hard times.”
― G. Michael Hopf, "Those Who Remain"
#TINVOWOOT
