What’s the average bra size in the US?

That’s a tricky inquiry to answer, since it counts on a few factors such together age and also whether we’re talking natural, pre-surgery sizes just (over 400,000 females in the US had actually a breast augmentation in 2018 alone). Oh, and not to mention that the average breast dimension in America is 34DD, but is not necessarily the same in other countries.

You are watching: What is the average cup size for a 14 year old

This article aims to define exactly what determines your breast size, failure the mean cup size and overall most common breast size about the world, and also introduce you come the various bra formats that have the right to make her bust look bigger or smaller. 

Average breast dimension by period (teens to adulthood)


The teenage years room a delicate, confound time for both boys and girls. Girls, however, are compelled to face a variety of body-image worries as they flourish and readjust throughout their adolescent years. Many young females get captured up with obsessing over your looks, your weight, and also their size.

Back before everyone had an iphone phone in your pocket, us blamed the magazines and also the runways. In 2019, that all around social media. Instagram stars and influencers room abound looking ever so exquisite, yet effortless with their straff skin and hourglass curves the boast rock-hard abs, small waists, and also perky breasts and also bottoms.

It’s no wonder teenage girls want to emulate their so-called flawlessness when being too young to realize specifically how unattainable this sort of ‘perfection’ in reality is. What’s worse? Teenage bodies are hardly perfect developing. Just how a girl looks at 12, and also then in ~ 15, and also then at 17 can often look like three totally different women.

Although a woman’s breasts room usually fully-formed by the moment she finishes puberty (which usually suggests to a 14 year old, 15, 16 or 17 year old), that’s not to say the her bra size then is the one she’ll wear for the rest of her life. Breasts readjust size and shape transparent life – and even ~ above a monthly basis, as they have the right to swell slightly during menstruation.

It’s especially an overwhelming to calculate the mean bra size amongst teenagers, since puberty deserve to hit at wildly different times. At period 7, 15% of girl are currently developing chest tissue. By period 8, that figure rises to 25%. And also yet there room others that make it come 12 or 13 through no indications of breast growth at all. That perfectly feasible for one teenager to be wearing an ‘adult’ bra while countless of her peers space still in a maintain bra, or not needing come wear a bra at all. 

Going later right into life, the mean breast size among women in your 20s, 30s and also 40s will certainly be smaller sized than for females in their 50s and beyond. That’s due to the fact that of the menopause, which tends to begin between ages 45 and 55. It reasons a slowing of the metabolism, i beg your pardon in turn can lead to weight gain. Follow to a 2004 study, roughly 1 in 5 women will certainly wear a larger bra size post-menopause than they go beforehand.

No one seems to have actually studied bra dimension by period in depth. But it appears safe to surmise that the typical size will gradually increase with age – with possibly a spike in the twenties and early thirties, due to the fact that this being when numerous women become pregnant and also see your cup size temporarily skyrocket.

Average cup dimension in America and other countries:

Just as the average clothing size varies roughly the world, for this reason too execute boob size – quite a lot! considerable study of over 340,000 women measured the typical cup dimension of people born in 108 countries, and found that it differed from listed below an A to over an F (US DDD). Right here are few of them:

Average cup dimension in Australia:D
Average cup size in Brazil:B
Average cup size in Canada:DD
Average cup dimension in France:A
Average cup dimension in Germany:D
Average cup size in Ireland:D
Average cup size in Italy:A
Average cup dimension in Japan:A
Average cup size in Mexico:B
Average cup dimension in brand-new Zealand:D
Average cup size in Russia:B
Average cup dimension in Singapore: DDD
Average cup size in USA (non-Caucasian):DD

Women in southern Asia and also South-East Asia have tendency to have actually the the smallest cup sizes. Although some nations were excluded from this study, including China, transparent Japan, Singapore, Taiwan, Thailand, Malaysia, Indonesia and Cambodia the median cup size was always an A or below. Unsurprisingly, this general an ar is known for the ultra-padded, ultra push-up bra styles!

The biggest (popular) mean cup dimension was uncovered in the USA, specifically amongst Caucasian women. This was the only group in the examine where the typical size was over a DD.

However, it is crucial to note that not all boob sizes, favor ‘D cups’ room the exact same size. A 36D is bigger 보다 a 34D in the tape and cup, and has the exact same amount of chest tissue together a 38C. We’ve defined why in detail in the ‘sister sizing’ section of our bra dimension chart page.

Therefore, it’s much better to look at the typical boob dimension in regards to volume, and not just the typical cup size. Luckily, the same study also involved measuring chest volume in milliliters.

Average Breast dimension By country (mL)


Boob size Chart


You’ll an alert for instance that the mean breast volume in Ireland is significantly greater than in Germany, despite both countries having an average cup size of D. Return the study did not incorporate band dimension data, this says that in Ireland, the median band size is larger – a 36D for instance rather 보다 a 34D. As simply mentioned, ‘D cups’ are bigger once they’re on a bigger band size.

Note the both boob size charts over are based upon measurements take away from ladies aged 28-30 only (who were neither pregnant no one lactating, and also who had not gone through breast surgical treatment of any kind). Therefore although castle are very useful because that comparing cup and also breast sizes in between countries, they nothing necessarily stand for the typical size in each nation overall.

So what is the all at once average? well according to one research of 60,000 people, the mean bra dimension in America is a 34DD. It is up native a 34B two decades ago.

However, at least component of the increase have the right to be meeting to far better education ~ above bra sizing, and the fact that it’s far easier nowadays to uncover a bra in a D+ cup size. Fewer full-busted ladies today space wearing a too-small cup dimension by mistake, or trying come cram their breasts right into one simply because nothing larger is available. And given the the typical band size hasn’t changed, it appears American females haven’t really gained much bigger.

What identify your breast size?

Why carry out some females wear a AA cup, and also others wear a GG? overall weight is a factor of food – however then of course, there are both thin women v naturally big breasts and plus-sized ladies with tiny ones.

As defined further above, period plays a duty in determining her bra size. A woman in her fifties or sixties is more likely to be full-busted than a 17 year old fresh the end of puberty.

Pregnancy is additionally a factor. Not simply lactation itself, which can easily cause an (albeit temporary) rise of 2 to 3 cup sizes, or even more. But also whether you’ve to be pregnant in the past – part women’s breasts stay bigger after they’ve finished breastfeeding, but many uncover that theirs shrink under to smaller than their pre-pregnancy size.

Mostly though, it simply depends on her genetics. Despite insurance claims to the contrary, there are no pills you can take, creams you deserve to use, or exercises you deserve to do to rise your breast dimension (although structure up her pectorals muscles that sit listed below the breasts can make them look a tad bigger). If your mom had specifically small or big chest, or knowledgeable a certain change in cup dimension after having actually you, there’s a an excellent chance you’ll follow suit.

Bra formats to make her breasts watch bigger or smaller

Not happy with your organic bust size? If you’re searching for a less invasive systems than surgery, you may be surprised in ~ just exactly how much of a difference changing bra layouts can make. 

Bras to make her boobs look at bigger

Molded cups – although these don’t actually include much volume, they give you a rounded form that we tend to associate through the ‘fullness’ of larger breasts.

Padded bras – commonly made with foam or gel, these have padding concealed away inside the cup to offer the impression that extra volume. Depending upon how lot padding there is, you can look almost everywhere from 1 come 3 cup sizes bigger.

Push up bras – a specific kind of padded bra, these have the many padding at the base of the cup. Your chest tissue sits on height of it, lifting it greater for more obvious cleavage.

Bras to make your boobs watch smaller

Minimizer bras – particularly designed for just this purpose, these usage tall, non-stretch cup that save your chest tissue compressed, for a flatter profile. They tend to make her bust appear about one cup dimension smaller.

See more: Is -4 A Rational Number S - How To Find The Square Root Of 4

Bralettes – a wire-free, regularly unpadded style of bra, these offer less lift and also a more natural shape. Return they nothing ‘squish’ her breasts at all like a minimizer, plenty of women think their bust looks smaller in a bralette.

Bandeaus – basically a pipe of fabric, this basic bra style doesn’t have separate cups or underwires. The absence of support and lightweight compression incorporate to provide your bust a contempt flatter appearance.