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Here is a
movie of Monica jogging.
It is running with physics engine in slow-motion to better visualize the soft body movements.
In it you can see that cloth simulation allows for more stiff clothing and underwear.
The collisions are all in real-time (even the earrings). The breasts have self-collision, so they do not intersect (needed in this case).

N.b.
Physics engine speed can be set in script, for testing/fun purposes.