Small bra cups can be very close. My measure guide is here to help find your best bra size.

Women’s Bras AAA-A cups | See Lulalu Perfect A-cup bras

Teenager Bras and First Bras | See Amazon Best Sellers Girls’ Training Bras

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 are better off with an AAA or AA cup.

But it can also be that they might need a B cup or even a C cup.

Shop Women's Small Bras!
Lulalu AAA-A cups & Pepper AA-B cups

Teenager Bras and First Bras
Amazon Best Sellers Girls' Training Bras

Bra sizes can be very close! I designed a bra calculator to play around with your measurements. Also, see my article on how to measure small breasts.

2. A cup vs B cup

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.

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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

Small Bra sizes can be very close.

Maybe you wear an A or B cup but need an AA or even a C cup. 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. Bra sister sizing

By understanding the concept of sister sizing and how it works, you can expand your bra shopping horizons and find styles that flatter your unique body shape and size.

Whether you’re looking to go up a cup size or down a band size, the principles of sister sizing give you the possibility to try different bra sizes. Find out your bra sister size.

5. How to measure your bra band

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, on average, have grown over the years. Weight gain and breast implants played a role in the increase over the years.

7. The best bras for sagging breasts

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

8. Why wash your bra by hand?

Your bra is a delicate treasure.

The elastic fiber regains its shape after regular hand washes. Read more on how to clean your bra

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.

Shop Women's Small Bras!
Lulalu AAA-A cups & Pepper AA-B cups

Teenager Bras and First Bras
Amazon Best Sellers Girls' Training Bras