Kitty 12360, Thanks for your pictures. This is an interesting question. It appears that you do not like your chin when you have muscle activit,y particularly smiling. I think the concept gets missed by both patients and plastic surgeons like that we can improve areas aesthetically due to "dynamic activity" (i.e., movement). Plastic surgeons really take care of what I call us "static" (i.e., non-movement) concerns. Whether that's their face, breasts or tummys, we can make these areas look better at rest. I say all of this to make you aware that , I don't know if there is a tried and true method to improve the way your chin looks during activity. Certainly seek the opinions and in person consultations of various board-certified plastic surgeons. Best wishes, ESJ, #TruthAndTransformation.