The band or frame size is the firm circumference fitted not tightly measured directly underneath the breasts. Match the number to this bra size chart to determine your cup size. Find out which actresses wear the same sized bra as you. Here are links to my other breast size pages. You might fit 40d but you might also try 38e. If you want to keep the same cup size but need another band size.
For example if your bust measures 37 inches and your band size not the exact measurement but the band size you found above is 34 the difference will be 3. Use the following to convert the bra sizes betweem different locations. You can see pictures of different actresses arranged in order of their bra size. This page is dedicated to celebrity bra size. The number refers to the size of the ribcage and the letter to the size of the breasts. Your band size is however close to 38 as well.
Your bra size is 40d. 51 465 so using the chart below you are a dd cup. When you go up or down a band size your cup size volume will change too. Lets say your bust measurement is 51 inches and your band size is 46 inches. The bra size also known as brassiere measurement or bust size is the measure which indicates the size characteristics of a brabra size is usually expressed as consisting of two measurements with a number of systems in use around the world the band length often numerical and cup size often alphabetical. The bust size is the loose circumference measured around the chest over the fullest part of the breasts while standing straight with arms to the side and wearing a properly fitted bra.
I also have a page that has a list of over 200 celebrity breast sizes. Each inch equals one cup size 1 a cup 2 b cup. A bra size is made up of a number and a letter. Our bra size calculator is used by measuring around the bust and just below it and working out how many inches of difference are between them.