"foxheart" said ...To manually animate the breasts, you need to right click the model and hit "bake procedural bones" After that, you can manipulate them as if they were normal bones.
Anyway, my question is basically this - when you download a model for SFM, is there any way you can edit the model's files to somehow give the model more jiggle than it already has?
"foxheart" said ...This is not possible without decompiling and recompiling the model. What you need to do is use Crowbar to decompile the model and edit the jigglebone instances in the resulting QC file. You can use this page for reference. Once you're done editing, you compile your QC file using studiomdl.
Was hoping to be able to just somehow alter the model's physics and for instance make the breasts lighter and more prone to bouncing in a natural way.