Yep, there are two, actually. If you know where to look, you can find expert bra-makers that stock AA and even AAA cups in band sizes 32 up to 36.
Bra Cup Sizes
The further down the alphabet a letter is, the larger the cup volume, starting with AA as the smallest. Some cup sizes have double letters (like AA, DD, or FF) and some just single letters.
You may be surprised to learn that bra cup sizes of AA, A and several B's are difficult to make because they require a much more exact fit. Women with more breast mass are able to move it around to fit into their cups, but small cup-sized women cannot.
There is a difference of between 2cm and 2.54cm (depending on where you shop) between each cup size, so an AA is an inch smaller than A and DD is an inch bigger than D.
A small bra cup size, of varying dimensions, but generally for a breast size up to ½ inch greater than the band size. Wiktionary.
AA cups are smaller than A, with AAA being the smallest bra size out there (although AAA is not as widely available).
If your bust measurement and band measurement are the same number, you're an AA cup. If there's a 1-inch difference between bust and band you're an A cup; 2-inch difference is a B cup, 3 inches is a C cup, 4 inches is a D cup, and so on.
The measurements given in this source (breast weight by cup size) were calculated using the average underwire size and the cup diameter of the more common bra brands. For example, Bra sizes 38A, 36B, 34C, 32D, 30E, 28F weigh about 0.9 pound per breast. An A cup breast weighs on average 236.3g.
AA is cup size smaller than A. An A cup only projects an inch outward from the band. An A cup provides for little support but can give you the opportunity to add the shape you wish. The AA cup does not really provide either but will give you coverage if your breasts project very little from the band.
Instead, the difference between an AA and A cup tends to be half the difference between an A and B cup. As Rachel at small-bust brand Lulalu explained, “our A-cup is a 1″ difference, followed by 0.5″ for our AA cup, and less than 0.5″ for our AAA cup”.
The pandemic caused a shift in attitudes towards underwear, too, which has impacted bra sales. Lockdown led to a jump in sales of loungewear and bras were cast to the back of closets as people prioritized comfort. As the economy reopened, some people continued to shun their bras.
Apparently, the biggest bra size ever recorded is 102ZZZ, which, to put it plainly, is absolutely crazy (that poor woman). However, the average biggest bra size is a bit smaller than that...
The Smallest Size Of Bra: Uncovered
The smallest size of bra that is widely available is a 28AA. This bra has a 28 inch band, along with a bust that is less than one inch bigger than the ribcage. You'll find this size manufactured by many different brands, including Royce.
In the United States cup sizes range from A to N. The cup sizes get larger as the letters go up in the alphabet. Size D is bigger than A, and H is bigger than D. Sizes are as follows: AAA, AA, A, B, C, D, DD, F, G, H, I, J, K, L, M, and N.
Small: 32A, 32B, 34A, 34B. Medium: 32C, 34B, 36A, 36B, 36C. Large: 32D, 34D, 36D, 38A, 38B, 38C. X Large: 32DD, 32DDD, 34DD, 34DDD, 36DD, 38D, 38DD, 40A, 40B, 40C.
Generally, the A cup is considered the smallest available but for some this is still too big and compensating with a smaller band size won't help. If you want something that's going to fit your form you'll have to go down a level to an AA or even AAA cup. They're not easy to find in Australia but they are out there.
A study conducted by Berlei lingerie reported the average breast size across Oceania to be a C cup, the same as Italy, France and the UK. The most popular bra sizes in Australia are 14C and 12D.
13 - 14 year old girls: Breasts become slightly larger during this stage as the glandular breast tissue develops. Average cup size: B cup. 14 - 15 year old girls: The areola and the nipple become increasingly raised, forming a distinct mound above the rest of the breast. Average cup size: C cup.
Average Cup Size
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.
* Wait, there's a size below A? Yep, there are two, actually. If you know where to look, you can find expert bra-makers that stock AA and even AAA cups in band sizes 32 up to 36.
On the basis of published data and results from this study, it is recommended that patients with a cup size>or=D or a bra size>or=18 could be categorized as having large breasts, with all other patients considered average in size.
Measure loosely around the fullest part of your bust. Subtract the band size from this measurement. Use this number to determine your cup size according to the table below. Example: if your ribcage measurement is 31, and your bust measurement is 37, your bra size is a 34C: 31+3=34, so 34 is your band size.
Stand upright without a bra on, and using a measuring tape, measure around your back and under your bust, where the band of a bra would usually sit. Make sure the tape is going around in a steady, even line. It should feel snug, but not tight. Measure in inches: if you land at an even number, that is your band size.
The only way to permanently change breast size is through cosmetic surgery, which comes with its own risks (and expense). Doctors usually prefer that girls wait until development is complete before getting surgery.