Size does not matter. My sis has size C/D cup and had low milk supply and my SIL size A cup has plenty of supply. It is all about consistency and proper diet. plus, growth may happen in the 3rd trimester.
It varies for individual. You may or may not see an increase in breast size during pregnancy and the sizes does not affect breastfeeding. You can be a D cup with no supply and an A cup with oversupply. 😄
i almost have a flat chest.. 33weeks pregnant and my boobs are still itcy bitcy.. lol
Big breast doesn’t equate to good supply of milk.