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Cup A is the slightly bigger sister of AAA and AA. This guide is all about A-sized ladies. Enjoy!
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This bombshell bra adds 2 cup sizes instantly! Want a more natural look? See my guide below and find all styles for petite A ladies.
1. How small is cup size A?
Bras come in different band sizes and cup volumes. Cup size A is one of the smaller cup sizes available. Other small sizes are AAA cup and AA cup (also Teens).
Shop Women's Small Bras!
Lulalu AAA-A cups & Pepper AA-B cups
Teenager Bras and First Bras
Amazon Best Sellers Girls' Training Bras
A teenager’s first bra can be a cup A. But a grown-up woman can also have a cup A (or smaller).
Bra sizes can be very close. You cannot just say cup A is smaller than cup B.
Let me explain this with an example.
✔ a woman is wearing a 40C bra. She is not happy with the cups, they are too big and she finds the band size a bit too tight.
✔ going up a band size would be a 42 band. When going up a band size the cup volume will automatically change too.
✔ 42C bra has more cup volume than bra 40C. So this woman has to go down at least one cup size. She might wanna try 42B and 42A.
Get to know Your Best Bra Size
2. Changing your bra band size
I own bras in 3 different sizes ( 34AA, 34A, and 36AAA – and they all fit me just fine. Depending on the type of bra and the brand I choose different sizes.
Remember that bras have sister sizes.
Especially if you’re in between two possible band sizes you could well have different cup sizes that fit you just fine. For example, a bra 80A has the same cup volume as a bra 75B.
3. The smallest bra size online
There’s no such thing as breasts being too small.
Cup A sure isn’t the only small cup bra on the market. There are also cup AA and cup AAA
4. Wonderbra push-ups
Now here’s a super bra brand if you’re looking for cleavage.
The story of the Wonderbra started in 1939 in Canada when a corset company decided to manufacture bras.
5. Small cup large band bras
No woman is the same and having smaller boobs does not necessarily mean your underbust size is also small.
See my selection AAA-A cups in band sizes 40-54
6. Bralettes for small cups
Bralettes give only light support. A basic black design is always a good choice. And I do like the look and feel of a lace bralette.
This bra style is great for A-cup-sized women.
I’ve selected 8 bralettes for AA-A cups
7. Bras 28a and 30a
Small bust small frame bras for women.
See 10 bras for sizes 28a and 30a
8. Your perfect skin tone bra
A bra that is closest to your skin tone will be invisible underneath that top, sheer blouse, or dress.
First, it’s important to determine your unique skin tone.
9. Teenager sports bras
Every teenage girl has her unique body proportions.
Girls of the same age may need a different sports bra depending on the support they need.
See my little guide for Teenage Sports Bras
9. Bra inserts for small chest
Bra pads are little lifesavers. And they come cheap. Add them in whatever you like.
These 8 bra inserts work great for just some padding, a little extra cleavage, or for balancing uneven breasts.
10. Swim shapers
Swimsuit pad inserts are a great replacement for your original pads. You might not want to increase your size and keep it modest.
But if you do look for a little or bigger boost, it’s just that easy.
11. Silk bras
A silk bra matches very well with smaller cups, like A or B. Silk is gentle on the skin.
If you once tried it… See 8 Silk Bras
My other guides
Bra calculator
6 Reasons Petites deserve a fine bra
Measure smaller breasts
Cup AAA guide
Cup AA guide (also teens)
Mastectomy bras
Bra Accessories
Blog 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