Keeping in mind that the average bra size for an adult woman can vary by country, in the United States, it is 34 DD.
In the United Kingdom, the average bra size is 36 DD. These estimated bra sizes have grown quite a bit over the years.
Back in 1983 in the United States, the average bra size for adult women was 34 B.
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Why do you need to re-measure your bra size every so often?
One of the biggest mistakes a woman can make is refusing to accept that her bra size can change. Age, lifestyle, and diet can lead to significant changes in bust size.
If you don’t measure yourself periodically, you will end up wearing the wrong size.
Whether or not your bra fits correctly will affect how comfortable you are and how your clothing looks on you.
What is the average bra size for a teenage girl?

The breast size of a teenager will depend on her genetics and her age.
In the United States, for a young lady between ages 14 and 18, the average size is roughly 34 with a cup size of B or C.
There are exceptions where a teenage girl’s bra size is considerably larger. For a girl under age 14, the range tends to be from bra size 30 to 36 with a cup size of A or B.
What about in the United Kingdom?
Again, the sizes are typically different from those in the United States. Here is a rough idea of what they are:
- Ages 10 to 11: 30 A or B
- Ages 12 to 13: 32 A or B
- Ages 14 to 15: 34 A or B
Please note that in the UK, the bra size of a teenage girl of 16 or older will usually be larger than that of younger girls.
In fact, the same holds true of most places where a bra is typically worn.
How do you figure out your bra size and cup size?

You must measure yourself without a bra on your body. Stand upright in front of a mirror.
Take a measuring tape and put one end underneath the front of your breasts.
Pull the tape completely around your back and continue until it meets the tape measurer at the starting point. This is your bra’s band size.
For the cup size, wear your best and most comfortable bra. You want it to hold your breasts firmly in place.
Take one breast in your hand and measure around it with the tape. This should be the fullest part of your breast.
Now subtract your band size from this part of your breast measurement. The difference is what your cup size is.
If you have trouble, seek out a professional in your local lingerie store.
Surprising changes in the average bra sizes for women
The average size is still about 34 DD. However, according to the major bra manufacturers, there is a continuing boom in both bra and cup sizes for women in general.
Manufacturers report sizes of 38 to 40 and higher. Additionally, cup sizes have surged to G, H, and even larger.
In some cases, the reason for the significant increase is due to breast augmentation surgeries.
However, there are massive numbers of women who naturally have larger breasts nowadays.
These women have not had any artificial substances whatsoever and are very proud of this fact.
What is the average bra size for a woman over 20 years old?

As was just mentioned, these numbers have increased in recent years. Nowadays, a younger woman of 20 or so will commonly be 34 DD.
It was not that long ago that less than 1% of women of any age had a bra cup size bigger than a D.
At that time, 36 C was considered to be average. Times have changed and so have women’s bodies. Will that continue? Who really knows for sure?
What about other places around the world?
Up until now, we have been concentrating on the US and UK. Here are a few estimates for cup sizes in various countries:
- Norway – DD
- Russia – DD
- Germany – D
- Switzerland – D
- Brazil – C
- France – C
- Canada – C
- Spain – B
- Egypt – B
- Mexico – B
- Korea – A
- Nigeria – A
- Uganda – A
Does a woman’s bra size really matter?

This depends on who you ask. There are some women that are happy with their size no matter what that is.
Other women are not and might even go so far as to have cosmetic surgery done. It is not always to make the breasts larger, either.
There are plenty of women who feel their breasts are TOO large. They go in for reduction surgery. It all depends on how a woman feels about herself.
Do men care about a woman’s breast size?
Again it differs with the individual. Some men do care one way or the other. Others look at characteristics of a woman’s personality instead of her physical attributes.
If a man truly loves a woman, he will support her no matter how she chooses to deal with her own breasts. It is safe to say the majority of men are neutral on this subject.
Do all women wear bras?

No, not all of them do. Many women only wear bras in formal situations or for special occasions. It used to be common for women to wear a bra.
Nowadays, not so much. Some ladies firmly believe it is a matter of personal choice.
Of course, if she is going to work or someplace important, she will absolutely wear a bra.
What reasons would most women have for not wearing a bra?
It can be a comfort factor. This is especially true for large-breasted women. A bra is just plain uncomfortable to wear.
Manufacturers are beginning to realize that though.
To combat the feelings of discomfort a bra may have, bra makers are adjusting the design of the bras.
Wearing a bra will enhance the look of a woman’s breasts

It is not uncommon for there to be flaws in a gal’s breasts. One may be slightly larger than the other. Perhaps the nipples are too pointy or stick out too far.
A bra will mitigate these flaws and make the breasts appear perfect. This enhances the overall look of her outfit as well.
Now she looks fantastic in whatever clothing she wears.
Significant improvements have been made to bras over the years
Now there are bras to fit any woman, no matter what size she needs. Not only that, but comfort is first and foremost in the eyes of the manufacturers.
Many makers have gone out of their way to make bras comfortable.
Then there is the sheer beauty of many of today’s bras. They are so elegant that a woman is tempted not to wear anything else.
If she and her mate are in a romantic mood, a woman may elect to wear one of these beautiful bras to turn them on. It works wonders, too.