HerRoom Response: Not all cup size H's are the same size in all brands. This is why we have a great chart that compares cup sizes between brands. Here's the link:
It is hard to answer this.
A bra always shall be fitted first because. some cups run more shallow than others.
There might be always a bit of a difference between a sewn cup, molded
cup or even a padded-mold cup. About the "poor side" support I've never heard this before. This style runs very well all over the world and we barely have any returns.
Of course each breast and the tissue of the breast is different.
We do our trial tests when we develop a new bra or size. This is why it
takes up to 2 years to develop a style.
Maybe she should try style 5051 if she has a breast which needs an I Cup.
Jessie from Tucson, AZ