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The Smallest Bra Size Online

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The smallest cup sizes to shop online are A, AA, and AAA.
So do not worry. If you are small-chested you can shop for beautiful bras too! See 3 smallest Cup Sizes

woman wearing smallest cup size black bra

Strapless bra | AAA, AA & A cup | See

The 3 smallest bra sizes online

Let me just say ‘There’s no such thing as boobs being too small’.

Women, girls (and men) are unique and so are their breasts. That’s why breasts come in all kinds of sizes and shapes.

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See my bra calculator or shop for bras at:

Lulalu Bras | Women's AAA-A cups »

HerRoom | Training and teen bras »

ThirdLove | Asymmetric Breasts »

Lulalu bras for women with AAA, AA, A cups | bands 30-42 | See

Did you know there are more than a hundred different bra sizes?

Please know that there is a bra size for every petite bra size and uneven breasts. There is no need to feel left out. Times have changed for the better.

If you are a petite-breasted you can shop too! Thank god some ladies started designing small bras out of their own needs and the needs of women around them.

Are you a young girl looking to buy your first cup-sized bra? Read my tips for teens here

Men look for bras for different reasons. Read my article on men’s bras here

It may seem that boobs only get bigger and bigger. But there are, and always will be, LOTS of women with smaller breasts. I personally believe we could fill up a new planet with us petite. It is my mission for every small-breasted woman to become a bra LOVER.

Why bra sizes can be that close

woman wearing small strapless bra cup aa

DOBREVA Strapless Padded Push-up Bras AA-DD | See

I meet a lot of women who wear A and B cups but really need a smaller cup size like AA or AAA.

But it could also be they need a B cup instead of the A cup they are wearing (or even a C).


Bra sizes can be that close. Wondering what bra size you actually are? Read more on measuring a small cup

Why do we (keep) wearing the wrong bra size?

woman in dobreva smallest cup size aa

DOBREVA Front-Closure T-Shirt Push Up AA – DD cup | See

I’ve listed some reasons why the smallest cups are overlooked.

  • in the shops, we cannot try the smallest sizes because they don’t sell them ☹️
  • we often get the wrong advice after a fitting
  • how can anyone advise you if they do not stock your size and are not aware of the existence of the smallest sizes?
  • 99% of bra size charts do not list the smallest cup sizes
  • you cannot possibly check your sizes correctly in the standard bra size chart if you’re small
  • it is very normal to stick to something that is not good for you, like a bad-fitted bra
  • we do not take the time to measure our sizes and check them in the right bra size chart
  • our body has changed and maybe our breasts as well, but we keep on wearing the bra size we’ve always been wearing

It’s very common for small-breasted women not to have had the right bra size ever before! If you’re small you tend to avoid the lingerie stores, feeling you don’t belong there (when having an AA or AAA cup you indeed do not).

Knowing your sizes

woman in seamless bra suitable for smallest cup

Hanes Women’s Convertible Seamless Wire-Free Bra Small – X-Large | See

I encourage every woman to learn about her own size. Even if you’re having a bra fitting, my advice is to write down the measurements.

You may have more than one bra size that might fit you just fine.

I have 3 different bra sizes and they all fit me fine. I usually have 34AA, but I’m close to the band size 36. In this case, I go for 36AAA. Because when going up or down a band size the cup volume of the bra will change too. 34A might work for me too, depending on the style and brand.

1. AAA cup

woman wearing smallest cup size aa lulalu bra

Lace bra | AAA, AA & A cup | See

Lulalu and Little Women are two lovely lingerie brands that have AAA cups in their collection.

Although this may seem a little for all those women wearing AAA cups. But you do not need to worry. Their collections are just… wonderful, from basic, lacy & more sexy styles.

2. AA cup

woman in plunge bra dobreva smallest aa cup size

Dobreva bras AA-DD cups | See

AA cup bras are easier to find than the smaller AAA cup. However, most brands do not offer them in their collection. Luckily you’ll find a good choice of them online.

Shops like Lulalu (AAA-A), Pepper (AA natural), and Dobreva (AA push-ups) are great brands to look for.

Bra from Pepper collection Amazon

I’ve listed 8 Brands that carry cup AA in this article. See all AA Brands

Are you a 34aa like me? My 9 favorite 34aa bras

3. A cup

women in popular warner bra smallest cup a

Over 24000 ratings! Warner’s Cloud 9 Wire-Free Contour Bra A-D cup | See

If you’re in between two possible band sizes you could well have different cup sizes that fit you just fine. For example, bra 80A has the same cup volume as bra 75B.

80a and 75b are so-called sister sizes.

It’s important to realize that a slight change of measurements could mean a totally different bra size.

By the way, bralettes look great on AA & A-cup-sized women. See Best bralettes for small cups

Other articles you might like

A cup guide on all topics
The average cup size US
Bikini tops for small cups
Swim shapers
Bra alternatives for a braless day
8 Soft silk bras
Bras 28a and 30a
Small cup large band bras 40-58

Lulalu Bras for women with AAA, AA, A cups | bands 30-42 | See

Her Room Banner

See my bra calculator or shop for bras at:

Lulalu Bras | Women's AAA-A cups »

HerRoom | Training and teen bras »

ThirdLove | Asymmetric Breasts »