Non Addon Jitter Physics Armature(Real-Time)
My Youtube channel:https://www.youtube.com/channel/UCU9HFKWoGafxAsr8IVypzQg
Ooohhhh shh!! I really love you!!!
ignore the comments, this is actually necesarry for a lot of animations, not only for this bodypart but you have that in almost all fat and tissue areas, great stuff
The person who made it probably made it with a bit of creepiness behind it, may e necessary to you, but who knows...
Its a pretty complex setup but sure something to learn from, could be used for a other body deformations as well, belly fat, fat legs, arms etc.. to make more realistic people, one could put this technique below a cloth sim and it looks way more normal then other creatures/people, its great for animals too.