Your best fit starts here
Sizes change over time, so it's worth checking yours.
Measure at home with our size calculator, or enter the size you wear now, and we'll show you your best fit and the bras in stock in it.
Three Ways To Find Your Size
Choose the way that suits you. We'll show you your best size and the bras in stock in it.
I Already Know My Size
Enter your sizeEnter the size you wear now to see your sister sizes and the bras we have in it.
Measure At Home
Start nowYou only need a soft tape. Our size calculator works out the rest.
Ask Our Fit Team
Contact usNot sure where to start? Message us and we'll help you choose.
Signs Of A Good Fit
Check these four things every time you try on a bra.
Band
Straight, snug and not riding up.
Cups
No spilling, no gaps, and the centre sits flat.
Straps
Stay up without digging in.
Comfort
No poking wires and no constant adjusting.
Your Sister Size
Sister sizes are bra sizes with a similar cup volume but different band sizes. If your bra feels too tight or loose, a sister size may give you a better fit.
Most common sister sizes
| Your size | Sister size |
|---|---|
| 32D | 34C |
| 34D | 36C |
| 36B | 34C |
| 36C | 38B |
| 36D | 34DD / 38C |
| 34B | 32C |
| 32C | 34B |
| 38C | 36D |
| 32DD | 34D |
Go up one band size and down one cup size, or go down one band size and up one cup size.
Need A Hand?
Message Us
Contact usAsk us anything about sizes, styles or your order.
More info
British Lingerie Studio makes it simple to find your right size, from home, in a few minutes.
Prefer to measure? Our size calculator takes two measurements with a soft tape and gives you your BLS size. Already know your size? Enter your band and cup to see your sister sizes and what's in stock.
Our bras come in bands 32 to 44 and cups A to F, in padded, non-padded, wired and wireless styles, with matching panties, camisoles, sleepwear and shapewear.