For this you need to understand sister sizes, which means a bra size whose cups hold the same volume as another bra size.
For example, the sister sizes of the bra size 30D are:
26DDD [US] or 26E [UK]
28DD
32C
34B
36A
38AA
All of those bra sizes hold the same amount of breast tissue, but the size of the band and the width and projection of the cups changes. Someone who wears a 34B has a wider ribcage and shallow, spread-out breasts compared to someone who wears a 26E, who has a smaller ribcage and narrow, projected breasts.
There are two graphics that show the relation of sister sizes. In each graphic, all the bra sizes that are in the same color row all hold the same amount of breast tissue.
United Kingdom graphic: http://i.imgur.com/6KJjw.png
United States graphic: http://i.imgur.com/Sy2LsFf.jpg
In the UK graphic, the smallest bra sizes by volume is 28AA and 26A, while the largest sizes by volume are 50FF, 48G, 46GG, 44H, 42HH, 40J, 38JJ, and 36K.
Currently, the largest cup size made in the UK system is LL, so the largest by volume would also include sizes 34KK, 32L, and 30LL.
In the US graphic, the smallest bra sizes by volume are also 28AA and 26A (as well as 24B, which is not currently made), and the largest sizes by volume are 52DDD/E/F, 50DDDD/F/G, 48G/H/J, 46I/J/K, 44J, 42K, 40L, 38M, 36N.
The largest cup letter currently made in the US is N, which is equal to a UK JJ cup. Brands that follow the UK sizing system, and make cups K, KK, L, and LL, therefore make more larger cups than the US, and may be suitable for women who outsize the US brand's N cups
It is also worth noting that a couple of United States brands have adopted the UK lettering system as it makes much more sense. One such company is "Affinitas" and it's "Parfait by Affinitas" line. The smallest band commercially made is 28. You can also have 26 and 24 inch bands made by companies such as Ewa Michalak, or you can make them yourself. As more people start to realize that a large number of women need bands under 30", we will see more and more 28s, 26s, and 24s.
Bra sizes range from A (the smallest cup size) to F (the largest cup size). There are also numbers associated with the letters that indicate the band size.
36/80
Decrease each by 75% .
the smallest bra size is 28AA
Bra sizes have two parts, a band size and a cup size. The band size is the measurement around your rib cage, and the cup size is a letter based on the difference between the band size and the measurement around the largest part of your breasts. Band sizes 30-42 are easy to find in stores, along with cup sizes A-D, and smaller or larger sizes can be found at specialty stores.
Bra sizes range from A (the smallest cup size) to F (the largest cup size). There are also numbers associated with the letters that indicate the band size.
The most common bra sizes are A, B, C, and D. The bigger the breast, the higher the cup-size. A is smallest, D is largest. Though, sizes larger than D do exist.
The smallest bra size typically available is a 28A or 30A. However, custom sizes may be available from certain brands or specialty stores.
In band sizes, 42A comes next. In cup sizes, size 40B is the next largest.
The largest common bra size would be a double D. Most commonly that is as big as the average breasts are. They do however make much bigger bra sizes for some women.
It is difficult to determine the largest natural bra size in the world as sizes can vary greatly. However, some individuals have been reported to have a natural bra size of up to 48V. It is important to note that bra sizes are not standardized and can differ across brands and countries.
36b
36/80
Bra sizes are typically categorized by a combination of a number (representing the band size) and a letter (representing the cup size). The band sizes usually start from around 28 and can go up to 50 or more, while cup sizes range from AA, A, B, C, D, DD (or E), DDD (or F), G, H, I, J, and beyond. The smallest size is generally considered to be 28AA, and sizes can vary slightly by brand and style. It's important to note that sizing can differ between manufacturers, so trying on bras is often recommended for the best fit.
The Sizes Range from 36 Mb to 64GB
1)Clay-sized 2)Silt-sized 3)Sand-sized 4)Pebbles
Decrease each by 75% .