B cup upper bust-lower bust =12.5cm.
C cup upper bust-lower bust = 15CM.
D cup upper bust-lower bust =17.5cm.
E cup upper bust-lower bust =20CM.
F cup upper bust-lower bust =22.5CM ... That's all for now. Wear a as 10- 12.5. If you want to be bigger, the concentration of breast milk collected by wearing thick cups is less than 10. It must be thick, and it is thick under and thin on. Fat people have meat. You can try to adjust, sister.