Try being 5'5 and 110lbs (I look thinner-no one believes I weigh over 100 lbs). I never wore tanks when I was younger because I was so thin. Now at 48 and 8 yrs into menopause, I've gain only a couple lbs and don't give a rip what other people think. I won't wear spahgetti straps because of the bony shoulders.
As far as the flapping, yeah, I've got that going. I was told that men have 3 muscles and we only have 2 and it's the bottom one we're missing. Would love to know a quick way to firm up-alot.