Simple example.
All modern models are build in the "T" pose.

Most of them include morphs to lift the breast when the arms go up.

NONE include morphs to lower the breasts when the arm lower.
Now, my wife does not go shopping with her arms in a "T" pose you know.

When modeled in a "T", the upper breast skin is already under tension, and breasts are already halfway lifted.
When the arms go down, skin relaxes and breasts go down too.
Well my wifes ones do, and my moters did.

Well, on this side of the world anyway.....

For this you need 3D room, and lots of it.

It can be done with a high poly mesh, but pay attention to morphing, twisting, bending and combining everything.

But??
I have not seen it yet.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
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