Teen bras sizing and how to measure

Teen bras are different from bra tops because teen bras have actual cups in their design.

What size bra do teenagers wear? »
How to measure the bra size for a teenager? »
3 top Teen bra brands »

What size bra do teenagers wear?

Teenage cup bras start with a cup AA

Teenage bras start from cup AA and will go to B, C, sometimes D. The cups of your first bra might be padded and may also have a wire in them. This is a flexible wire that will be very comfortable.

Some teenagers start with an AA cup, some might need a B or a C cup. Your breasts may grow but they may stay small. This is normal. Grown-up women might still need an AA cup or smaller. Breasts come in all shapes and sizes. This is nature. And we’re all beautiful.
Read more about the average UK bra size »

How to measure the bra size for a teenager?

You need a measuring tape to do your measurements. Write down the outcome. You will need two numbers to find your best bra size.


Measure your underbust | This is your band size

illustration on how to measure your band size
Measure your underbust

Measure your bust size | this is your cup size

illustration on how to measure your bust size
Measure your bust

Whatever age you are, getting your right bra size is the first step before trying and buying a bra.

It’s not difficult to determine your bra size at home. Of course, you can ask someone to help you or get a bra fitting in a lingerie store.

It’s important to measure regularly. Your body size and therefore your breasts may change in size over time.

Read our Small Bra Guide for all topics on small cups »

Only a well-fitted bra will feel and look good.

You can look up your bra size in this bra size chart. But you can also use the handy bra size calculator to find your best bra size.

small bra size chart
bra size chart AA-B cups

Top 3 teen bra brands

1. Boobs & Bloomers

The first brand I want to highlight here is Boobs & Bloomers from the Netherlands. They are specialized in underwear for girls only. Size range AA – C cups

picture of a girl first bra boobs and bloomers brand
Boobs & Bloomers Girl’s Basic Padded Anny Full Cup Bra (Amazon)

Girl’s Lot Dot Print Black Non-Wired Padded Bra | See collection Boobs & Bloomers at Amazon.co.uk

Girl’s Soof Fantasy Print Dark Blue Non-Wired Padded Bra | See collection Boobs & Bloomers at Amazon.co.uk

2. Royce Lingerie teen bras

A well know brand from the UK is Royce Lingerie. They have a very well balanced collection for girls’ first bras.

royce teenage bras set
My First Bra by Royce (Amazon)

My First Bra is a pure cotton bra, making it feel very soft. A two-pack with one plain white bra and one with a pretty pink trim. Size range 30AA – 36B.

Impact free petite sports bra

This sports bra is designed for women and girls with a smaller frame.

  • The bra offers good support during sports and exercise.
  • It has a racerback design and adjustable back fastening.
  • The foam pads in the cups give a great shape.
  • The pads can be easily removed, leaving a pocket to hold a prosthesis if required.
  • Cups A-D. See details of this sports bra at Amazon.co.uk

Super soft molded cups bra

wired girls bras in black and nude
Two-pack bras, molded cups. Size 30A – 36D | See collection Teen Bras Royce at Amazon.co.uk

3. Marks & Spencer

M&S has a special first bra collection. You’ll find both wired and non-wired designs. Colors black, nude, white, pink

first bras of the collection marks and spencer
Angel 2 Pack Non-Wired First Bras AA-D | See details at marksandspencer.com

Another brand to check out is Triumph. This brand has a petite bra collection designed for the smaller proportion figure type. Have a look at their 2 bestsellers in AA-B cups »

Researches say 60 to 80 percent of women do NOT wear their right bra size

Use a bra size chart or try the bra calculator Marks & Spencer |
Go to M&S bra size calculator »