When using a pump, make sure that the flanges fit properly. Most
pumps are not sold with a larger flange. Medela makes a PersonalFit
that comes with two special size flanges for larger breasts.
Does a Woman Nursing with Large Breasts Produce more Milk?
Not necessarily, irrespective of breast size, what really counts is the amount of mammary glands present. Some women may have large breasts, but the breasts may contain more fat than breast tissue.
A larger breasted woman, with a large volume of breast tissue, will have a larger storage capacity, which means that she would be able to feed her baby more milk at one time, but this does not mean that she produces more milk. Therefore, mothers with smaller breasts would need to nurse more often, as a baby empties the breast quicker.