I am one of those people who likes to push the envelope, just to see if I can. And yes I can, and sometimes do.

At a towering 5'4" and a whopping 125 pounds, I've surprised myself at what I can hide.
My carry options vary from a Model 36(2") to the Model 65,(3") the 686+(3"), the Model 29(4"), the Kimber Pro Crimson Carry II(4").
I can hide any of them, but the Model 29 isn't practical for me until I find a different holster, the grip is just too high to be able to draw it, with my short torso, the grip ends up in my armpit. Suggestions are welcome, please.
Just to prove it could be done I carried hubby's GP100(6") all day, he had no idea what I had been carrying until we got undressed at bedtime. The look on his face was priceless, as he hollered, "hey that's mine"
All of these will hide wearing just my normal jeans and sweatshirt or jeans and t-shirt. If you want to carry a large gun, it can be done. A good holster, a good belt and some determination will do it.