I normally wear a 40DDD bra. I have 2 longline bras from Davids Bridal. 1 I bought (42D) and 1 my MIL bought bought (40DD) a long time ago. the 42D bra is what was suggested to me by the Davids Bridal alterations manager.
Both bras make my chest look like a shelf. Am I not wearing them right? They both have a good amount of space above my boobs inside the cup. I asked the alterations manager about it and she assured me that the dress would fit it no problem.