34 D
It is possible to purchase a bra in size 40d directly from stores such as Marks and Spencer, Debenhams or La Senza for example. This size can also be purchased online, from stores such as Figleaves dot com for example.
40dd is the larger size
What's the difference in a 40d bra and a 40
It can be a 40D, 38DD, or 38E depending on where you need the size increase. The number represents the measurement around your rib cage. The letter is the measurement around your ribs and breast in relation to the number size, and the number of letters has to do with breasts width.
What's the next bra size after 36d
The next size up, based on band size, is 30A. The next bra size up, based on cup size, is a 28B or, in some sizes, 28AA.
No, but they are so close in size that if you fit one, you would fit the other reasonably well. Either might the correct fit for a figure that is (for example) 46 inches total. When doing bra fittings you frequently shift both the band size and the cup size by one in order to find the correct fit.
In band size the next size up is 32A. However, the next size is 30B in cup sizes.
e
There is no ideal bra size for a 12 year old. Your bra size will change a lot over the next 8 years, and probably over your entire life.
34 f