It's a good thing I used this pose for the render, with the arms all down and backward like that. The shrug slid right off her shoulders the first time because I had forgotten to pin it in place.

I'm thinking the default will be for the straps and the shrug to be held in place with the option to turn that off for special effects. I'm using single-triangle groups as pins, just add to or remove from the constrained group in the cloth room.

-- I'm not mad at you, just Westphalian.