What is the Smallest Bra Size?

We often get asked what the smallest bra size is. The answer is that there is no definitive answer, as bra sizes can vary significantly from one brand to another. However, we can give you a general idea of what the smallest bra size is likely to be.

The smallest bra size is usually around a 32AAA or 32A. However, it is important to remember that bra sizes can vary significantly from one brand to another. So, if you are looking for a specific size

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The average woman wears a bra size of 34B. However, bras come in a wide range of sizes, from 28A to 56J. So, what is the smallest bra size?

There is no definitive answer to this question because bra sizes vary greatly between brands and even between styles from the same brand. However, some brands do offer smaller sizes than others. For example, Freya bras start at 28FF, while Panache bras start at 30D. So, if you are looking for a smaller bra size, these are two brands worth checking out.

Of course, even within these brands, there will be some styles that run smaller or larger than others. So, it is always best to try on a bra before you buy it to ensure that it is the right size for you.

What is the smallest bra size?

The smallest bra size is an AA cup. This size is for women who have a very small frame and breasts. Most women who wear this size are between the ages of 12 and 13.


The UK uses the band sizes 28 through 40, with cups starting at AA and increasing in half-inch increments. The smallest band size available is typically 28, but some stores may carry smaller sizes. The smallest cup size available in most stores is an A or an AA.


In the United States, the smallest bra size is typically considered to be a 30AAA or a 32AA. These sizes are considered to be “mini” or “petite” sizes. However, some stores or brands may carry smaller sizes, such as 28AAA or 29AAA.

If you are looking for a truly “tiny” bra size, you may want to consider looking for bras made specifically for petite women. These bras are designed to fit women with small busts, and they often come in cup sizes down to AA or even AAA. You can find petite bras in many lingerie stores, as well as online retailers that specialize in small sizes.


In Europe, the smallest bra size is an A.

How to measure your bra size

It can be tricky to find the right bra size, especially if you are unsure of your measurements. The first step is to measure your band size. To do this, wrap a measuring tape around your chest, just under your breasts. Make sure the tape is level and snug, but not too tight. Round to the nearest whole number.


To measure your bra size in the UK, you will need a soft measuring tape and a ruler. With your tape measure, you will need to take 2 measurements: around your chest (under your arms and above your bust) and around your ribcage, just underneath your bust. Once you have these 2 numbers, you will need to subtract the second measurement from the first. This number corresponds to your UK bra size. If the number is even, add 4 to get your band size; if it’s odd, add 5. For example, if your chest measurement is 34 inches and your ribcage measurement is 32 inches, you would subtract 32 from 34 to get 2. This means that your band size is a 36 (2+4=6).

To get your cup size, simply measure around the fullest part of your bust. Once you have this number, subtract your band size from it. The difference corresponds to your cup size according to this chart:

0-1 inch difference = AA cup
2 inch difference = A cup
3 inch difference = B cup
4 inch difference = C cup
5 inch difference = D cup


To measure your US bra size, you will need:
-A measuring tape
-A mirror

With your bra on and your back straight, look in the mirror and locate the fullest point of your breast. Wrap the measuring tape around your chest at this point, making sure that it is level with the ground. Make a note of this measurement and then measure around the narrowest part of your waist.

Now, subtract your band size from your bust measurement. The difference will correspond to a size in inches (e.g., a difference of 2 = a B cup). To find your cup size, refer to the following chart:

difference in inches cup size
0-1 A cup
2 B cup
3 C cup
4 D cup
5 DD or E cup
6 F cup
7 FF or G cup


In Europe, the standard method is to measure under the bust. The band size is the circumference, in centimeters, measured directly underneath the breasts. It should be snug but not too tight—you should be able to fit two fingers underneath it. The next step is to determine the cup size by measuring around the fullest part of the bustline while wearing a well-fitting bra. The difference between this measurement and the band size is your cup size. For example, if your band size is 85 cm and your bust size is 90 cm, your cup size would be B (12 cm difference).


After doing some research, it seems that the smallest size for a bra is actually a 28AAA. However, this size is very hard to find and most stores do not carry it. The next smallest size would be a 28AA, which is also quite difficult to find. So, if you are looking for the smallest bra size possible, you may have to special order it or look for it online.