Well, I came across an article suggesting bras MAY help lead to bc. I found that the idea of constriction of breasts from bras, interrupting lymphatic flow, was an interesting concept. I recall that my smaller breast, the one that I got bc in, always had my bras riding up over it right in the spot that I got bc in...interesting. Applicable links for dressed to kill...
http://www.all-natural.com/bras.html
http://www.amazon.com/Dressed-Kill-S.../dp/0895296640