Find your fit

Two measurements, one fit question and a preference. We will give you a size, a sister size and a shortlist — then you can check it with a human on WhatsApp.

Step 1 of 3 · two numbers

Start with two numbers.

Use a soft tape in centimetres. Underbust: snug around your ribcage, under the bust. Full bust: around the fullest part, parallel to the floor.

Show the measuring diagrams

Diagram: a tape measure held level around the ribcage, directly under the bust — **01 / UNDERBUST**Tape level, snug on the ribcage directly under the bust. Breathe out and read the number. This is your band.

Diagram: a tape measure around the fullest part of the bust, parallel to the floor — **02 / FULL BUST**Tape level around the fullest point, no squashing. Keep it parallel to the floor. This is your cup starting point.

03 / SISTER SIZESame cup volume, different band. If 36D is tight in the band but right in the cup, try 38C. If it rides up, size down the band and up the cup.

Measurements are a starting point. If you are between sizes, message a fitter with your underbust, full bust and the style you are looking at — we will check the specific cut.

Underbust (cm)Snug, directly under the bust. Most bands sit between 63 and 107 cm.

Full bust (cm)Around the fullest part, parallel to the floor. Do not add four inches.

Full size guide

What does your current bra do?

This changes the recommendation more than the tape does.

The biggest problem

How do you want it to feel?

We will point you to the right shape, not just the right number.

Preference

Your recommendation

Your size is

—

Sister-size diagram: 36C shares cup volume with 34D and 38B — Same cup volume, a different band. Try both before deciding.

Shop bras in your size Check with a fit specialist

Compare 10 fitting methods in the Fitting Lab · This is a starting point, not a diagnosis. Bra sizing varies by brand and shape. If you are unsure, message us your measurements and we will check the specific style with you. This review build keeps your measurements on your device only.