Our example of 30 would have you guessed it a 34 band size. At age 7 15 of girls are already developing breast tissue. If the chest width is 725 cm. To determine your band size take measurement 1 your rib cage and add 4. A bra size is merely based on the measurement of your rounded chest width to measure your bra size run the tape over your rib cage directly under the bust and add 125 cm. Must be evenly divided by 5.
The average bra size in the united states is 34dd. Then bra size 725 125 85 cm. This figure can vary by country. The band or frame size is the firm circumference fitted not tightly measured directly underneath the breasts. When people talk about breast size they often describe it in terms of bra size. A is equal to 1 inch b is equal to 2 inches c is equal to 3 inches and so forth.
Bra size are available only in 80 85 90cm. Breasts change size and shape throughout life and even on a monthly basis as they can swell slightly during menstruation. Its especially difficult to calculate the average bra size among teenagers because puberty can hit at wildly different times. This difference will determine the bra size for every inch of difference cup size increases. Put em together and the example bra size is 34b. 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.
Use the following to convert the bra sizes betweem different locations. For example if you determined that the teens band size was 34 inches 30 inches of measurement plus the added 4 and her cup measurement was 36 inches subtracted that would leave a difference of 2 inches or a b.