A big step in the evolution from girls to women is the choosing and buying of the first bra.
The first bra size chart and converter is easy to use and provides all measurements needed to make the first bra count.

There’s a dedicated post about all the steps we suggest in chosing and buying your or your daughters’ first bra and make it a great experience.

The first Bra Size chart : step by step

How to Measure the first bra size?

Step 1:

Measure around the rib cage, just below the bust.
– Measuring in Inches? Go to the closest even number and add 4 = The Band Size
– Measuring in centimeter? Go up or down to closest multiple of 5 = The Band Size

Step 2:

Measure under the arm around the center of the bust.

Determine the Bra band size:

Note that many teenager and kids bras don’t mention the cup size as there is not much cup to fill yet.
The first bra for your daughter or teenager might be found only with Band Size indication alone.

Determine the Bra cup size:

The difference between the Bust size (the biggest measurement) and the Rib Cage (or underbust) size makes the Cup size of your first bra.

Size guide for bras in sizes XS, S, M, L and XL

Now the bra size is determined, you might come accross many soft and strapless bras in sizes XS, S, M, L and XL. For teens and younger girls the Cup size will help figuring your international Size in buying the correct bra.

International first bra size converter

Different sizing used across the globe can be confusing! Find below an easy to use Bra Size Converter.
Do you want to check which bra size corresponds to the French or UK size? You want to buy a very nice Italian design bra for your daughter but only know the US size of your teenager?
Check your size in the below table.
The Cup sizes (A, B, C etc.) are the same in all sizes

Example: if you’re a French size 90B, your European size is 75B, your Australian Size is 12B, and your UK size is 34B.