Asian and African nations have the smallest, with predominantly B and A cup sizes being most common. Australia is way down the list: in 2020, the most common Australian bra sizes are reported to be 14C and 12D, and while this is the average across all ages, there really is no such thing as the “average” woman.
Your breasts are unique
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.
According to a survey conducted between 1992 and 2013, the average bra size in the U.S. has increased from a 34B to a 34DD, and now just six years later, the average has shot up to a DDD — that's the largest compared to any of the other countries studied.
The 36 is a bigger band size than the 34. Here's an example of some other sister sizes. So all of these cup sizes are the same. The only difference is the band sizes.
34B is one of the most popular bra sizes in the country.
Average Breast sizes for Teenagers
Age 14: Breast size B. Age 15: Breast size C. Age 16: Breast size C+, at this age girls develops breasts completely that leads to full bra size of adults.
The smallest bra size is generally 28AA, but some places (particularly specialist retailers) will produce AAA cups. 28AA means that the bra band is 28 inches and the bust is less than one inch larger than the ribcage.
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.
Is D or DD cup bigger? There's no difference in the spacing between single and double letter sizes, a DD is one full size larger than D, just like E is one full size larger than DD.
When you look down at your bra do you notice space between your breasts and the cup? If so, it's too big. If you aren't able to see any gaps while standing up, try leaning over while looking into a mirror. If there is extra space in your cups it's time for a new size.
In most of these surveys, majority of participants including men and women have voted in favor of C cup breast size as the perfect boob size. In one of the most comprehensive surveys involving around 1,000 Europeans and 1,000 Americans, more than 53% of men voted for average breast size as the ideal boob size.
What's the perfect breast shape? Nearly everyone agrees—it's a breast with an “upper pole to lower pole ratio of 45:55,” reports a study in the September issue of Plastic and Reconstructive Surgery®, the official medical journal of the American Society of Plastic Surgeons (ASPS).
There are several c cup sizes, and their measurements range from small to the average size of a brassier. A c cup ranges from 33 ⅘ to 43 ¼ inches. The band size for a C cup is 3 inches smaller than the bust size. C cups breasts can look quite different in different human bodies.
There's nothing wrong with wearing a bra while you sleep if that's what you're comfortable with. Sleeping in a bra will not make a girl's breasts perkier or prevent them from getting saggy. And it will not stop breasts from growing or cause breast cancer.
And when it comes to 32B bra size, it is on the small side of average. "B" cup is considerably small than average, and it is considered being small bra size. 32 is the band size which is the measurement around your chest, under the breasts where the band of the bra sits.
Breasts that appear smaller can be caused by genetics, rapid weight loss, hormones, medical conditions, malnutrition, post pregnancy or a lack of breast tissue development.
X Small: 28AA, 28A, 28B, 28C, 30AA, 30A. Small: 28D,28DD, 30B, 30C, 30D, 30DD, 32AA, 32A, 32B. Medium: 32C, 34AA, 34A, 34B, 36AA, 36A, 36B. Large: 32D, 32DD, 34C, 34D, 34DD, 36C, 36D.
Aging. As a woman gets older, the ligaments that make up the breast tissue stretch and lose elasticity. As a result, breast fullness is compromised as the underlying support system of tissue and fat diminishes. A change may be particularly evident during menopause.
“As soon as the breasts start growing breast buds, small (sometimes very tender) bumps below the nipples, is typically when girls start wearing training bras,” said Dr. Kronborg. “Normally, by the time a girl can fill a B cup is when she'll eventually require a standard bra.”
Some experts claim there's nothing wrong with going au naturel, but if you are craving some extra support, a sports bra can be a happy medium. Not only is it an underwire-free way to support your girls, but it's versatile enough to wear to a workout and Netflix marathon.
With standard sizing, you can expect a 32C and a 32D to be bracketed together as a Small, a 34C and a 34D to both be Medium, a 36C and 36D to equate a Large, and so on, up through the fit range.
The skin on your breasts should naturally be more or less flat and smooth. Again, consistency is key. Bumps and birthmarks that are always present are not a problem. A sudden change in the skin on your breasts should be reported to a doctor.