>>15291860Big tits are fat, bro. Women with big tits don't have larger capacity for breastmilk, they have larger portions of fat.
Breastmilk is produced in glands, automatically when a woman becomes pregnant, but can be forced through repeated use (thos is how wet nurses work).
As common side effect of pregnancy is tits going up a cup size even when no longer nursing, but the point is larger tits on girls does not necessarily equate to increased, or even larger potential, for milk production.