Average and most satisfying boob size.

an average to larger than average cup size. Rarely accompanied by slim body, unless implants or a small C cup.

A breast size that is slightly above average. In America, the medium to larger C Cup sizes are the optimal range of breasts, as they strike a happy medium between too small and too large to adequately grope. By Japanese measurements, however, a C is the equivalent of an American small B, so As are something truly pathetic in Japan.

Boobs big enough to barely cup in one hand.

The reason why girls don't need to lose weight.
D-cup is even better!

finally, a respectable bra size

minimum interesting bra size.