If C cups are the midpoint or medium breast size indicator on the cup size scale, then D cups mark the transition towards larger breasts and DD cups are the exact opposite of A cups.
What about DDD sizes? DDD is most commonly used in the US, and converts to an E or F cup in UK sizes – one size up from DD.
DD or DDD is the average cup size in the US, so C is viewed as smaller. A C cup, however, is considered large in Japan, since the average cup size is an A.
The larger the band size, the larger the cup. Therefore, the cup of 34B is the same as 32C or 36A. Here's a bra size measurement chart for sister cup sizes to help you slip into the perfect one! Now that you know your correct size, let's find your perfect bra!
A D cup will fit smaller than a DD cup. If you normally wear a C cup and you're noticing that your breast tissue is overflowing out of your bra cups, you may need a bigger cup size.
For some reason, we have been brainwashed into thinking that boob sizes go from A-DD, DD being the biggest boob/bra size. DD is actually at the lower end of the scale, there is still E, F, FF, G, GG, H, HH, J, JJ, and K cup above that.
For less than one inch you are a AA cup, for one inch you are an A cup, for two inches you are a B cup, for three inches you are C cup, for four inches you are a D cup and for five inches you are a DD cup.
I'd say it would make you about average. According to this guardian article, the average bra size these days are 36D. So, as a 32DD, you would be the equivalent to a 36C - which would be one size smaller than the average woman if that makes sense.
Is 34DD Medium or Large? A 34DD bra is considered large among the standard sizes. It has a five-inch size difference between the bust and band.
X Large: 36D, 36DD, 38AA, 38A, 38B, 38C, 38D, 38DD, 40AA, 40A, 40B, 40C, 40D, 40DD.
For example, a 36C is the same cup size as a 34D and 32DD. This is because as the back size, or the number, gets smaller, the difference between your back and bust increases. This causes the cup size, or the letter, to become larger."
As a bustier woman with a tricky bra size—a 32DD is not a common size—I'm always thinking bra first. When I shop, it's "What bra will I wear with this?" because I generally don't go without one.
Each inch you breasts project from your ribcage is a cup size. For example a 36C, 34D and 32DD are all the same cup size, but a 34D breasts project out 1 inch less than a 32DD but because the different from the band to the cup has increased they are both the same cup size.
When people talk about breast size, they often describe it in terms of bra size. The average bra size in the United States is 34DD. This figure can vary by country. In the U.K., for example, the average is 36DD.
A 34C and a 32D are actually the same size cup size.
In this way, sister sizes are far more accurate. To give you another example, if you're a 38C, your bra belongs to this family: 30F, 32E, 34DD, 36D, 38C (your size), 40 B. So your closest sister sizes are actually 36D and 40B, because while the band may vary, the cup volume is exactly the same.
Actually, 36D and 38C are around the same size. It's just that 38C is slightly bigger than 36D.
A 34DD bra is considered large among the standard sizes. It has a five-inch size difference between the bust and band.
It really is that simple. It's all in the cup. To maintain the same cup volume the cup sizing gets smaller as the band size increases and vice versa. A 10DD, 12D & 14C all have the same cup volume even though the letters differ.