Band
It should sit straight and snug around your body without riding up.
FIND YOUR FIT
Calculate your bra size
Two careful measurements give you a reliable starting size. It only takes a minute.
BEFORE YOU START
Measure over a non-padded bra
Stand naturally in front of a mirror and breathe normally. Keep a soft measuring tape parallel to the floor.
- 1Underbust
Wrap the tape snugly around your ribcage directly below your bust. Keep it firm without digging in.
- 2Fullest bust
Measure around the fullest point. Keep the tape secure, level and loose enough that it does not flatten the bust.
Do use exact measurements, keep the tape level and measure twice.
Avoid padded bras, holding your breath or pulling the tape too tight.
YOUR STARTING SIZE
32D
Use this as your first size to try. Shape, fabric and brand can change how a bra fits.
Shop brasNearby sister sizes
These hold a similar cup volume with a different band fit.
Firmer band 30DDMore relaxed band 34C
CHECK THE FIT
A number is only the starting point
Cups
Your bust should be fully enclosed with no spilling, cutting in or empty space.
Centre
On a wired bra, the centre panel should sit flat against the ribcage.
Straps
They should stay in place without digging in. Most support comes from the band.
SIZE REFERENCE
Cup size reference chart
The band is based on the closest even underbust size. Each inch of difference between fullest bust and band moves approximately one cup step. This transparent method provides a practical fitting starting point.
| Bust − band difference (inches) | Cup size |
|---|---|
| Less than 1 | AA |
| 1 | A |
| 2 | B |
| 3 | C |
| 4 | D |
| 5 | DD / E |
| 6 | F |
| 7 | G |
| 8 | H |
Fit note: bodies and bra shapes vary, and size labels are not identical across every brand. Recheck after weight, hormonal or body changes and use each product’s size guide where available.