Teenage cup sized bras for AA, A & B

How to buy your first real cup-sized teenage bra? Here’s a quick guide on how to measure yourself and finding the teenage bra you like. See 8 styles AA-B bras for girls

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Bra sizes for teenage girls

Teenage bras start from cup AA and go up, depending on the brand, to a cup B, or C. You could say the larger your breasts the bigger cup size you need.

As a teenage girl, it could be you need a cup AA, but it can also be you need an A, B or C cup. Many grown-up women also still wear the smaller cup sizes AA-B. All girls and women have unique bodies and breasts.

Remember that there’s no such thing as being too small or too big. Nature comes in all sizes (and this will always be like this).

teenage girl in a teens bra and matching slap
Your first bra! | See 8 styles

It might be that your breasts are (still) too small for a cup AA. You then want to look for bras and bra tops that come in sizes starting from x-small. The collection girls underwear on Amazon has a bra or bra top for any girl, regardless of what size she is.

How many bras do I need?

Starting with 3 or 4 bras will do. You might need a bigger bra size soon if your still growing. As a young girl your bra size can change in a short time.

  • you need different bras for different occasions, like school or doing sports
  • you can wear different styles depending on what you wear, for example, a racerback style underneath your summer dress or low cut top
  • did you know that your bra needs a rest after wearing it?
  • the elastic fiber will regain its shape
  • if you have a couple of bras you can rotate between them
  • your bras need to be washed regularly. This keeps the fibers clean and more elastic.

How to measure my first bra?

To decide on your bra cup size you will need to take two measurements. You can measure yourself at home, it is not difficult. Of course, you can ask your mother or a friend to help you taking your measurements.

Exclusive AAA, AA & A cups | Shop lulalu.com

how to measure your band size and your cup size for teenagers

There are only 3 steps really.

Step 1 measure your underbust
Hold the tape under your breasts and write down the inches or centimeters.

Step 2 measure you bust
Hold the measuring tape around the fullest part of your breasts. Don’t pull the tape too tight. Write down the inches or centimeters.

You need a measuring tape and a mirror to check if you’re holding the tape horizontal.

80% of women are wearing the wrong size bra
Find your fit Thirdlove's Fit Finder Quiz

Step 3 Find your best bra size in a bra size chart. Or you can use our handy bra size calculator

Teenage bra size chart in centimeters
Always start with choosing your best bra band size first. Go from there to decide on your cup size.

bra size chart teenage girls
bra size conversion chart


Many girls are just in between two band sizes or cup sizes. So you might have doubts about which bra size to choose. Just play around a bit with the measurements and maybe measure a couple of times.

Going up or down a band size will change the cup volume as well.

  • if you want to keep the same cup volume you would have to go up or down a cup size as well
  • for example, 75A and 70B bras have the same cup volume
  • 75A and 80A do not have the same cup volume

10 teenage bras cup AA-B

1. Anny Wired Padded starter bra AA-B cups

Boobs & Bloomers Girl’s Anny Dark Grey Underwired Bra AA-B cups | See details at Amazon.com

 lightly padded cups
 flexible wired bra
smooth underneath clothing
 adjustable straps
 wear it straight or as a racerback
 95% cotton

2. Barbra Big Girls Bras for Teen Girl Wireless Molded Padded Juniors Training Bra 5 Pack

Barbra Lingerie Big Girls Bras for Teen Girl Wireless Molded Padded Juniors Training Bra 5 Pack | See details at Amazon.com

 sizes 30A, 32A, 34A and 36A
molded lightly padded bra
 adjustable straps to tree sizes for developing teen girls
 90% cotton, 10% spandex
 5 pack

3. Maidenform Girl frontclosure bra cup A

maidenform girls bra

Maidenform Girl Rh4351 Bra | See collection Maidenform Girls at Amazon.com

 wireless bra
cups have a thin foam layer
 93% Polyester, 7% Spandex

4. Calvin Klein Girls’ Big Seamless Hybrid Starter Bra 30-36A

starter bra calvin klein

Calvin Klein Girls’ Big Seamless Hybrid Bra | See Calvin Klein Girls’ collection at Amazon.com

 47% Polyester, 45% Nylon, 8% Spandex
 adjustable straps
soft and seamless

The starter bra from Calvin Kleins comes in several colors | See here on Amazon

5. Girl’s Lara Fantasy Print White Wireless Bra AA, A & B cups

Boobs & Bloomers Girl’s Lara Fantasy Print White A-B cups | See the collection B&B at Amazon.com

 wireless bra
 lightly molded cups
adjustable straps
 95% cotton

6. Alyce Girls & Teens 6 pack Lightly Padded wired Bra 30-36A

wired bra for girl

Alyce Intimates Girls & Teens Lightly Padded Bra, Pack of 6 | See details at Amazon.com

 95% polyester, 5% spandex
 assorted solid colors
lighy padding
 wired cups and soft underband

7. Bebe Girls’ Training Bra – 4 Pack Soft Microfiber Molded Bra A-B cups

bebe Girls’ Training Bra – 4 Pack Soft Microfiber Molded Bra (A Cup/B Cup) | See details at Amazon.com

 molded cups
 adjustable spaghetti straps
perfect for playing sports or relaxing at home

8. Alyce Intimates Girls & Teens Lightly Padded Bra, 6 Pack 30-36A

Alyce Intimates Girls & Teens Lightly Padded Bra, Pack of 6 | See details at Amazon.com

 95% polyester, 5% spandex
 super soft & breathable
wired cups
 light padding

Other articles you might like

Sport bras for teens
How to measure your bra band
The smallest bra cup online
Small bra size chart AAA-B
Guide for AA cups | bras & swimwear


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