Checked October 17, 2026
Curvy Kate
Which sizing system Curvy Kate uses on its UK and US sites, its published size range and fit advice, and how to convert your size.
- UK sizing on both sites
- Fit quiz available
- Published conversion chart
Brand information checked October 17, 2026
Check the brand behind the label
Bra Size Guides by Brand
Find out which sizing system a brand uses, link to its official size guide, and see what the brand itself says about fit before you choose a size.
Good to know: a brand can show different size labels on different products, stockists or country websites. Always check the size system shown for the item you are buying.
Browse A–Z
7 brand guides
- Curvy Kate size guide
- Freya size guideChecked October 17, 2026
Freya
How Freya labels sizes on its UK and US websites, its published cup range and fit advice, and how its conversion chart compares.
- UK and US labels differ by site
- Published conversion chart
- Fit checks published
- Panache size guideChecked October 17, 2026
Panache
How Panache shows sizes on its UK and US websites, what its fit guide says, and what we could not confirm.
- UK/US sizing switch on US site
- Recommends professional fitting
- Limited published chart
- Soma size guideChecked October 17, 2026
Soma
Soma’s published bra size chart and measuring advice, its size range, and how its chart differs from our calculator.
- US cup letters (DD, DDD, G, H)
- Published measurement chart
- Inches and centimeters
- ThirdLove size guideChecked October 17, 2026
ThirdLove
How ThirdLove labels its cups (including half cups), its published range, its measuring method, and why its E and F are not UK E and F.
- E (DD), F (DDD) labels
- Half cup sizes
- Published measuring tables
- Victoria’s Secret size guideChecked October 17, 2026
Victoria’s Secret
Victoria’s Secret’s size range, how its charts label cups such as DD (E), and its official international conversion chart up to DDD.
- US sizing
- Official conversion chart (to DDD)
- Bracketed EU letters
- Wacoal size guideChecked October 17, 2026
Wacoal
How Wacoal America labels cup sizes, its published size range, how its online calculator differs from ours, and its official US to UK cup table.
- US cup letters (DD, DDD, G…)
- Official US to UK cup table
- Online fit calculator
We don’t have a guide for that brand yet
Check the brand’s official size guide in the meantime, or ask us to add it. We only publish a guide once we have checked the brand’s own information.
Inside each guide
What you’ll find in a brand guide
Each guide sticks to what the brand publishes, with the date we checked it.
Sizing labels
Which sizing system the brand uses on its UK and US websites.
Official size guide
Direct links to the brand’s own size guide and fit advice.
Published size range
The bands and cups the brand says it makes, including any inconsistencies.
Next steps
When to use the converter, re-measure or check the fit.
Keep these separate
Three things to keep separate
Sizing gets confusing when these are treated as the same thing.
01
Your measurements
What a tape measure reads around your ribcage and bust. These are about your body, not a bra label.
Inches or centimeters
02
The size label
The size printed by a brand in a particular sizing system, such as UK, US or EU.
UK, US, EU, FR or AU label
03
The actual fit
How a specific bra sits on you, which depends on its shape, materials and style as well as its size.
Comfort and stability
Read the label and the product page
They tell you which sizing system the item uses.
Before you order
Before you order: a six-point checklist
- 1 Sizing systemCheck whether the shop lists the brand’s own sizes or converts them.
- 2 Cup sequenceDD, E, F, FF in a size menu suggests UK sizing; DDD suggests US.
- 3 StyleCompare the style you are ordering with ones that have fitted you before.
- 4 Official guidanceRead the brand’s size guide for that storefront.
- 5 Loosest hookA new bra should fit on the loosest hook.
- 6 ReturnsCheck the returns policy before ordering more than one size.
Related tools
Explore our sizing tools
Bra Size Calculator
Work out a suggested starting size from your underbust and bust.
International Size Converter
Convert sizes between UK, US, EU, French and Australian labels.
Bra Fit Checker
Work out what to check when the band, cups or straps feel wrong.
Brand sizing questions
Frequently asked questions
Why can the same size fit differently between brands?
Brands design and grade their bras differently: wire shape, cup depth, fabric and band firmness all vary. Two bras labeled 32F from different brands can fit quite differently, so use each brand’s own guidance as well as your usual size.
Should I order my UK size or my US size?
Use the sizing system the shop or storefront is using for that product. Most US brands use US sizes, but letters after DD differ (for example ThirdLove writes F (DDD)). Some UK brands use UK sizes on every site (Curvy Kate says its US site lists UK sizes), while others switch to US sizes on their US site (Freya). Check the brand guide and the product page.
Can I trust the conversion printed on a label?
Labels follow the brand’s own conversion, which may differ from other brands’. If you are unsure, use the brand’s official size guide for that storefront and our size converter as a cross-check.
Do you test these brands’ bras?
No. These guides summarize what each brand publishes about its sizing, checked on the date shown. They are not product reviews, and we do not have a relationship with the brands.
Should I sister size when trying a new brand?
Start with your usual size in that brand’s sizing system. If the cups fit but the band feels too firm or too loose, a sister size may be worth trying.
How we write brand guides
Brand guides summarize each brand’s own published information, with the date it was checked. Brands do not pay to appear, and we do not currently have any brand partnerships. Spotted something out of date? Let us know.