A DD cups = E for full body bras, DDD = F but if you are used to buying a standard bra that comes in cup sizes B-DD and no higher , there will be approximately a half cup size increase between the DD in a standard style and a DD/E in a form fitting style.
For some reason we have been brainwashed into believing that breast sizes range from A to DD, with DD being the largest breast/bra size. DD is actually at the lower end of the scale, above that are E, F, FF, G, GG, H, HH, J, JJ and K Cup.
The cup size is the same in the US and Europe/France. “A” Cups (USA) = “A” Cup in Europe/France; B=B, C=C, etc. with some exceptions for “DD” and “DDD” cups. Many European brands (and some American brands) use the letters “E” for a DD cup size and “F” for a DDD cup size.
E is considered a quite large cup size.
It might seem confusing, but yes, a DDD is the same as an F – sometimes they’re labeled differently depending on the brand. After size D, you can move up to either size DD, which is equivalent to bra size E,, size DDD, which is equivalent to size F, and size DDDD, which is equivalent to size G.
The correct fit of the cups is influenced by the band size. When the underbust measurement changes, the cup size also changes. For every underbust measurement you decrease, you should increase one cup size. If you have a 34D with a good cup fit but want to go to a 32 band, you would go to a 32DD for a tighter band with the same cup fit.
The 36DD and 38D have the same cup size, the only difference is that the 38 band is larger than the 36 band.
Find your current bra size and your sister sizes are those listed in the same row (transitional). For example, if you have a 34C, your sister sizes are 30E, 32D, 36B and 38A. Each series is a family of sister sizes. Let that sink in for a moment: an A cup can also be an E cup.
The Healthcare Cost and Utilization Project (HCUP, pronounced “H-Cup”) is a family of healthcare databases and related software tools and products developed in a federal, state and industry partnership and funded by the Agency for Healthcare Research and Quality are sponsored (AHRQ).
In reality, the size difference between D and DD is 1″ for the same under bust measurement, the same measurement difference as between an A cup and a B cup, a B cup and a C cup, one C cup and one D cup.
There is a gap at the top of the cups.
Looking down at your bra, do you notice a gap between your breasts and the cups? If so, it’s too big. If you can’t see gaps while standing, try bending forward while looking in a mirror. If your cups are too big, it’s time for a new size.
Your breasts are unique
The average bra size in the United States is 34DD. This number may vary by country. For example, in the UK, the average is 36DD.
Based on the published data and results of this study, it is suggested that patients with a cup size>or=D or a bra size>or=18 could be categorized as having large breasts, with all other patients are considered to be of average height.