It's easy to assume that breasts are like bottles - the bigger they are, the more they can hold, right? 

Wrong! (All-be-it very logical!) 

You could have teeny tiny breasts and have a much larger milk supply than someone with breasts double the size.

Why? 

Because milk production relies on the presence of glandular tissue in the breasts - this tissue is made up of clusters of sacks and tubes known as Alveoli and Ducts that produce milk based on supply and demand from feeding your baby and then transport it to the nipple.

Between the glandular tissue is fatty tissue. You could have lots of that fatty tissue, meaning you have to invest in lingerie on the larger size, but have minimal glandular tissue or visa versa, with very little fatty tissue giving you the appearance of tiny breasts but with lots of glandular tissue available for a plentiful milk supply if everything goes to plan. This is also why if, for example, you've had surgery around your chest, whether in relation to the size of your breasts or not, this may impact future milk production if it has had an effect on the amount of important glandular tissue remaining so this can be an important part of your history when looking at any feeding issues down the line.

If you're concerned about your supply, seek support from an infant feeding specialist (like me!) and we can have a chat and if further investigation is needed, we can help signpost you in the right direction.