About an average of more than 60% of women does not wear the right bra size.

Do you feel totally fine with your bra size? That’s great. You won’t need a bra size check. But if you do? 

Bra Size Guide | index

  1. How to measure a small cup?
  2. A cup vs B cup | What’s the difference?
  3. Small bra size chart
  4. What are bra sister sizes?
  5. Measure your bra band | band too tight or too loose?
  6. Bras for sagging breasts
  7. Why you should hand wash your bras?


1. How to measure a small cup?

a women holding a measuring tape about how to measure a small cup
Your bra size may have changed easily

I became a true bra lover only after knowing my own sizes. With my measurements and the use of a small bra size chart, I learned which bra sizes would fit me (many women fit more than just one bra size).

Dobreva front-closure T-Shirt Push Up Adds 1 Cup (AA-DD cups) | See the collection Dobreva at Amazon.com

Many women with smaller breasts may not ever have had a properly fitted bra in their lives before. I meet a lot of women who wear a bra cup A who’d be better off with an AAA or AA cup. But it can also be that they might need a B cup instead of the A cup they’re wearing. Or even a C cup. Cup sizes can be quite close together.

photo on how to measure cup size

Read our blog on how to measure a small cup size »


2. A cup vs B cup

Here’s the story of the cup volume every woman should realize.

For example, the bras 40A, 42AA, and 38B all have the same cup volume.

a woman in a strapless black bra for a and aa cups
Thirdlove invented ½ cups | AA-I cups See their collection at Thirdlove.com

So, you can’t just compare cup sizes. You cannot just say that a cup B is bigger than a cup A. Because changing your band size automatically has an effect on the cup volume.

How will I know if I’m an A or B cup? Read more »


3. Small bra size chart

women with small breasts in a white lace bra
Are you maybe smaller than A cup? Always check the right size chart

As I mentioned before, bra sizes can be very close together. Really very close.

Maybe you wear an A or B cup now but need an AA or even C cup at this moment. Only a slight change of your measurements could mean a different bra size than you are used to right now.

bra size chart small cups
Bra sizes can be very close | check our small bra size chart AAA-B cups
adhesive bra for aa and a cups
NuBra The Feather-Lite Super Padded Light Adhesive Bra  AA-C cups | See NuBra collection at Amazon.com

Want to check D+ cup sizes? do check the calculator on brasforlargecup.com »


4. What are bra sister sizes?

different bras laying flat illustrating the blog on bra sister sizes
Bras with different numbers might fit the same woman!

Bra sister sizes are bras that have different numbers but do have the same cup volume.

Decide over time what your preferences are. It can well be that you wear 3 different bra sizes that all fit you just fine. Depending on the bra style and the bra brand you might want to choose different bra sizes.

  • Always remember that when going up or down a band size, your cup size will change too.
  • Bras in 34A and 36A do not have the same cup size.
  • The bras 34A and 36AA do have the same cup size. Read more about bra sister sizes here »


5. Band too tight or too loose? | How to measure your bra band size?

photo on how to measure band size
Measure the underbust, write down the inches or centimeters


6. The best bras for sagging breasts

The pull of gravity works on any size of breasts. On small breasts as well.

What bra styles should you look for? And what bras you’d better avoid? Read the full blog »

In this video, by Herroom you’ll learn what bra features work well for saggy breasts.

Video 3.55 | Best Bra Styles for Deflated and Pendulous Breasts

Handful has a collection of sports bras, bottoms, tops with a built-in bra, and bra pads. Great on women with smaller breasts, uneven breasts, and after mastectomy of one or two breasts | See the collection Handful at Amazon.com


7. Why you should hand wash your bra?

dog in washing machine on article about hand washing your bra

Your bra is a delicate treasure. And we expect from it to support us throughout the day (and nights). So why should we preferably hand wash bras?

The elastic fiber of our bra needs the best of care from us! Because a bra that is taken good care of will give you longer and better support.

Warner’s Women’s Elements of Bliss Wirefree Lift Bra A-D cups | See details at Amazon.com

Did you know regularly washing is important for the elastic fiber to regain its shape? Read the full post about ‘How to handwash your bra’»


Index brasforsmallcups.com

learn how to measure a small cup size »
find out your true bra size today! »
more about aaa cup bras (and smaller) »
more about aa cup bras »
more about a cup bras »
mastectomy bras »
blogs on bras and more »


Go to bra size calculator and determine your best bra size


Video Top 10 for petite ladies by Herroom

How To Measure Your Bra Size
Bras For Women With Small Cup Sizes
Bras For Strapless And Backless Dresses
Best Bra Styles For Deflated And Pendulous Breasts
Best Bras For The Plus Size Petite Woman
Cleavage Defined: The Hidden Truth