What is the smallest bra size?

Answer 1

24AA is the smallest volume commercially made.However, "the smallest bra size" is not something that can be answered very clearly or easily because of something called "sister sizes". A sister size is a bra size whose cups hold the same volume as another bra size.

For example, the sister sizes of the bra size 30D are:

26DDD [US] or 26E [UK]

28DD

32C

34B

36A

38AA

All of those bra sizes hold the same amount of breast tissue, but the size of the band and the width and projection of the cups changes. Someone who wears a 34B has a wider ribcage and shallow, spread-out breasts compared to someone who wears a 26E, who has a smaller ribcage and narrow, projected breasts.

There are two graphics that show the relation of sister sizes. In each graphic, all the bra sizes that are in the same color row all hold the same amount of breast tissue.

United Kingdom graphic: http://i.imgur.com/6KJjw.png

United States graphic: http://i.imgur.com/Sy2LsFf.jpg

You can see in the UK graphic, that the smallest bra sizes by volume is 28AA and 26A.

In the US graphic, the smallest bra sizes by volume are also 28AA and 26A (as well as 24B, which is not currently made).

There are six different bra sizing systems currently in use in the world. For this answer I will talk about two of them, the United States system and the United Kingdom system.

Bra companies in the United Kingdom manufacture a larger range of bra sizes compared to most United States companies, since the companies in the UK (more specifically, England) realize that the bra alphabet does not stop at DD. You can not fit every bra-wearing person (about two billion people) in 5 different cups (AA-DD) on 10 band sizes (32-50), which is only 50 different bra sizes. Unfortunately, most United States companies only make those sizes, and will measure women incorrectly so they can get them to wear a bra that doesn't fit them properly.

In the United States system, the only double letters are AA and DD, with the rest of them being just single letters. But please note that there is no standard for bra sizing in the US, and companies can label their Bras whatever they want. This makes it difficult for women to buy bras from other brands because of this. The general lettering system goes as follows, but not all brands will follow this:

0 inch difference: AA

1 inch difference: A

2 inch difference: B

3 inch difference: C

4 inch difference: D

5 inch difference: DD

6 inch difference: DDD/F

7 inch difference: DDDD/G

8 inch difference: H

9 inch difference: I

10 inch difference: J

11 inch difference: K

12 inch difference: L

13 inch difference: M

14 inch difference: N

15 inch difference: O

16 inch difference: P

17 inch difference: Q

18 inch difference: R

In the United Kingdom system, each letter (except for the letter "E", and the letter "A" which has the double before it) has a double letter after it, while the letter "I" is excluded from the system entirely. The bra sizing generally follows this standard, with only a few companies that do things a little different. It makes it much easier for women to bra bras from different brands because of this. The cup lettering goes as follows:

0 inch difference: AA

1 inch difference: A

2 inch difference: B

3 inch difference: C

4 inch difference: D

5 inch difference: DD

6 inch difference: E

7 inch difference: F

8 inch difference: FF

9 inch difference: G

10 inch difference: GG

11 inch difference: H

12 inch difference: HH

13 inch difference: J

14 inch difference: JJ

15 inch difference: K

16 inch difference: K

17 inch difference: L

18 inch difference: LL

It is also worth noting that a couple of United States brands have adopted the UK lettering system as it makes much more sense. One such company is "Affinitas" and it's "Parfait by Affinitas" line. The smallest band commercially made is 28. You can also have 26 and 24 inch bands made by companies such as Ewa Michalak, or you can make them yourself. As more people start to realize that a large number of women need bands under 30", we will see more and more 28s, 26s, and 24s.

Answer 2

The smallest bra size commercially made is a 24AA, which is for someone with a 24 inch ribcage and a 24 inch bust. This size is made only by Ewa Michalak.

Answer 3

The smallest I've heard of is 28AA but there is probably smaller.