Women with larger breasts have more fat tissue than women with smaller breasts, but that doesn't mean they have a greater amount of milk - making tissue. (verywellfamily.com)
Also, these pads are specifically marketed as being nursing pads for small breasts. (omaby.com)
I have very small breasts though, so I don't know how well it would work for those of you that are blessed and actually have something to hold up! (thefashionablehousewife.com)