Add the arm pit area of the cloth to the constrained group. This will keep that area from getting ripped up when the arm presses into the side. Be sure to add as much as will get smushed when the arm hits the side. You need the add the chest and arm areas. If you are using cloth self collision this is even more important as it will keep the cloth from getting stuck together where it's pushed through it's self. I'm really sick of struggling with figures suffering from dislocated shoulders and broken ribs. If you are working with pants you will probably need to add the crotch area to the constrained group as well. P6 users get SR1 there were some nice fixes in the cloth room. Excessively complex sims don't corrupt the scene any more for example. Nerd3D