I will report on the results when I get a free afternoon to carry out the project. :-)

Mostly I figure that if I draw something distracting right over my boobs, no one will notice a small white mark down near the hem -- it's all about focusing people's attention. Or, for the shirt where the bleach mark is right between my boobs, I can use that splotch as the center of a flower or something so it will look intentional.