woman in pink bra small cup

The smallest bra size online

You won’t find the smallest bra cups in the lingerie shop near your place. And that’s ok because we live in the age of the internet.

DOBREVA Women’s Front Closure T-Shirt Push Up Adds 1 Cup Size AA – DD cup | See collection Dobreva at Amazon.com

A small cup size, like an AA, can fit a teenage girl, but it can also be the right cup size for a grown-up woman. Us petite are everywhere and there will always be small boobs. Everyone of us is unique and so is our bra size.

Read my blog for the best teenage bras for AA-C cups »

Why many women do not wear the right small cup bra size?

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.

woman wearing a bra from lascana collection a cup and aa cup
Lascana basic push-up bra with removable pads for a fabulous decollete AA-C cups | See the collection at Lascana.com

Lascana’s petite collection bras & swimwear 32-40 AA | 32-42 A | 32-46 B See the collection at Lascana.com

How come many petites still end up wearing a bad-fitted bra?

  • in the shops, we cannot try the smallest sizes because they don’t sell them
  • we often get the wrong advice after 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 if you’re small, and then likely just will choose a cup size that is closest to your measurements
  • it is very normal to stick to something that is not good for you, like a bad-fitted bra
  • we do not take some 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

Are you an A cup? See our A cup guide for more topics just for you!

woman in a small bra size
Our body and breasts can change in size several times

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 here.

Why it’s a must for every petite to know their own sizes?

Hanes Women’s Convertible Seamless Wire-Free Bra Small – X-Large | See collection Hanes at Amazon.com

I encourage every woman to learn about her own sizes. Even if you have a bra fitting I always advise you to write down your own measurements. It will make it easier to check your size in a size chart (or calculator) and see what your options are. You may have more than one bra size that might fit you 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.

A bra in 34AA and 36AA does not have the same cup volume. However, a bra in 34AA and 32A do have the same cup volume.

The 4 smallest bra sizes online

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

Women are unique and so are their breasts. That’s why breasts come in all kinds of sizes and shapes (read more about the 9 boob types). Please know that there is a bra size for every petite woman. There is no need to feel left out. Times have changed for the better. If you are a petite breasted woman you can shop too. Thank god some ladies started designing small bras out of their own needs and the needs of women around them. 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 the whole lot of us. It is my mission for every small breasted woman to become a bra LOVER.

The Best Comfy Bra for Small Busts | Limitless Wirefree Bra | Cup Sizes AA, A, B | See details at Amazon.com

Bra cup A is not the smallest cup size that you can buy. Even though many people may think it is. Other small cup sizes AAAA, AAA cup, and AA cup.

I’ve met (and meet) women who wear an A cup bra (or a B cup bra) that is too big for them but never really considered trying a smaller cup size. Although they are not happy with their bras, lacking support and not making their self-esteem grow.

woman fastening her bra looking in the mirror
A well-fitted will turn any woman into a bra lover

The four smallest bra sizes

AAAA cups

Dainty Lady is an exclusive British online lingerie store. Their collection of small bras are available in cup sizes from AAAA, AAA, AA, A and B cups, in bust sizes 28 to 46 and with matching lingerie in sizes 6 to 18.

AAA cups

The only American store with AAA cups.
Lula Lu makes intimate apparel for women who wear AAA, AA, and A cups, with band sizes ranging from 30-38.

Their bras are designed for women in 28 to 40 AA, A and B cups. The collection has an exclusive range of AAA bras, sized 32 to 40. 

aaa – b cups

AA cups & ½ cups Thirdlove

woman in a bra from thirdlove aa cup

50% of women fall in between standard cup sizes, ThirdLove invented half-cup sizing. 34A½, 36A½, 38A½, 32B½, 34B½, 36B½, 30C½, 32C½, 34C½, 30D½, 32D ½, 30E½. See the collection at Thirdlove.com »

Amazon AA cups

Great choice AA cups on Amazon with brands like Pepper, Amoena, Anita, and Tween Bee. See AA cup bra at Amazon.com »

If you have a small cup size you can go natural on your bra. Meaning you choose a bra with little or no padding or push-up pads. Looking for a little more boost for your AA-A cup? See 5 favorite push-up Wonderbra’s for AA-A cups »


Go to bra size calculator and determine your best bra size

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