Alan M. Engler, MD, FACS (retired) says:Hi OregonMom,
Great question - I wish there were a precise answer.
In GENERAL, it's about 150-200 grams per bra cup size, but it's less at the smaller end, and more at the larger end. In other words, it's less than that to go from a AA to an A, and more from an F to a G...