Caveat: It still falls under the clothing fabric category and the chest is a faster moving part of the body. So it can be a little bad when shaken violently.
Thanks for the ratings! Yes, it shouldn't distort with custom Morphs changes. And it can wiggle. The downside is that it's fabric and will still be soft.
Thanks for the rating. The video is just a short demonstration of me using a timeline to get the hands to move back and forth at a few points and using two cyclic forces to get the body to shake. No dance moves.