Well after lots of trial and error DD has finally found what seems to be the perfect bra size for her - 32dd. When she started noogling she was wearing a 32b although, in retrospect, I think the cups were a little small. She then went to a 34b and then up until recently a 34c. However the 34" band size had tol be worn on the tightest hole and soon stretched so that it did not offer correct support and rode up - despite the fact that she measures 31" under the bust and, according to the add 4"/5" rule she shoudl be wearing a 36 band! After reading on several sites that say that this method is outdated with modern bras with a lot of elastication, she went back to a 32d but the cups did not seem as big as the 34c, so tried the 32dd and at last it seemed perfect! She has tried both push up and none push up styles and they are both good.
The strange thing is that without a bra she really does not look that big. She took one look at the 32dd and said 'I will never fill that' and yet she does. She feels that tghere is little difference in size without a bra or 'cupping' her breasts. There must be of course, but it is not as obvious without a bra. She does have a wide 'base' to her breasts which means that the breast tissue is kind of spread out, (probably why it is less obvious without a bra) and a lot of tissue to the side near the armpit. When she pulls all that in she fills the bra and has cleavage, even in the non push up versions, and has a really niced shape under clothes. The band is snug but comfortable and does not dig in.
I know that the add 4" rule wroks for many but if you are struggling to get a good fit it might be worth trying a smaller band and a bigger cup
The strange thing is that without a bra she really does not look that big. She took one look at the 32dd and said 'I will never fill that' and yet she does. She feels that tghere is little difference in size without a bra or 'cupping' her breasts. There must be of course, but it is not as obvious without a bra. She does have a wide 'base' to her breasts which means that the breast tissue is kind of spread out, (probably why it is less obvious without a bra) and a lot of tissue to the side near the armpit. When she pulls all that in she fills the bra and has cleavage, even in the non push up versions, and has a really niced shape under clothes. The band is snug but comfortable and does not dig in.
I know that the add 4" rule wroks for many but if you are struggling to get a good fit it might be worth trying a smaller band and a bigger cup