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Measuring a small cup is done like any other cup size. But small bra sizes can be very close, and you might fit more than one bra size. Bra Measuring Guide for AAA-C cup

woman in lace bra small cup illustrating how to measure a small size

DOBREVA Lace Front Closure Racerback Plunge Bra | AA – DD cups | See Amazon.com


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See my bra calculator or check your shop for bras & size charts

D+ Bras | video & charts » Herroom
AAA - A bras » Lulalu.com
AA - H bras & ½ cups » Thirdlove
Post-surgery bras » Anaono



Bra Size Guide for AAA-C cups


1. How to measure a small cup?

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.


AAA, AA, A cups | Shop at lulalu.com


Bra sizes can be very close! Read more about measuring smaller breasts


2. A cup vs B cup

different bras comparing a cup bra and a b cup bra

An A cup and a B cup can have the same cup volume. How come?

Well, you cannot judge a bra size only by its cup size.

To compare different cup sizes you would have to know the band sizes too. Read more on A cup vs B cup


3. Small bra size chart

measure tape for small sizes

Bra sizes can be very close. Really close.

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

Do not skip this small bra size chart if you’re petite.


4. What are bra sister sizes?

how to measure bra size

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 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 sometimes. Find out your bra sister size


5. How to measure your bra band

woman wearing a bra with band too tight

The most support of our bra comes from its band, so it should be a bit firm but never too tight.

What if you measure in between two possible band sizes? Read more on choosing your best bra band


6. The average bra size US

Boobs in the US apparently have grown over the years. Weight gain and breast implants played a role in the increase over the years.

What’s the average cup size and what’s a normal size?


7. The best bras for sagging breasts

woman in a bra top lifting her arms

What bra styles are best for deflated and pendulous breasts? And what bras you’d better avoid? See best bras for sagging breasts


8. Why you should hand wash your bra?

washing bra by hand

Your bra is a delicate treasure.

The elastic fiber regains its shape after regular hand washes. Learn more about how to wash and dry your bras


My other guides

6 reasons why small boobs deserve a fine bra
Bra calculator
Cup AAA guide
Cup AA guide (also teens)
Cup A guide
Mastectomy bras
Bra Accessories
Blogs on bras and more


Is there a question about your bra still unanswered? Please let me know. I’ll be happy to advise.


AAA, AA, A cups | Shop at lulalu.com



Her Room Banner

See my bra calculator or check your shop for bras & size charts

D+ Bras | video & charts » Herroom
AAA - A bras » Lulalu.com
AA - H bras & ½ cups » Thirdlove
Post-surgery bras » Anaono