Interactive Bra Size Tools, Visual Comparisons & Expert Advice
Start with our Bra Size Calculator to find your correct bra size, then explore our Bra Size Guide, compare UK bra sizes with original interactive tools and get clear Bra Fitting Advice from The Lingerie Advisor.
Compare All 220 UK Bra Sizes Visually
Explore one of the UK's most comprehensive illustrated bra size libraries. Compare any of the 220 manufactured UK bra sizes side by side using our original visual comparison tools to better understand cup volume, sister sizing and how bra sizes change across different band sizes.
Bra Size Calculator & Interactive Bra Size Tools
Use our Bra Size Calculator to find your starting size, explore our Bra Size Guide, compare UK bra sizes visually and convert between sizing systems and brands with our free interactive tools. For personalised fit tips, visit our Bra Fitting Advice.
Visual Bra Size Comparison Tool
Select two UK bra sizes and compare their illustrated proportions, underbust measurements and fullest-bust measurements side by side.
- Compare any two of the 220 illustrated UK bra sizes
- Explore differences in band size and cup volume
- View original size illustrations and measurements
Bra Size Calculator
Enter your underbust and fullest-bust measurements to calculate a UK bra size starting point before checking the fit.
- Simple underbust and bust measurement entry
- Instant UK band-and-cup size result
- Links to fitting advice and related size resources
UK Bra Size Converter
Convert UK bra sizes between selected lingerie brands whose cup-size sequences use different labels.
- Compare equivalent UK sizes between brands
- Account for differences in UK cup-size labelling
- See equivalent sizes such as Triumph 34G and Freya 34FF
Many of our cup size and comparison guides include page-specific interactive tools for comparing two or three relevant UK bra sizes without leaving the guide you are reading.
Learn Bra Sizing with Our Complete Guides
Learn how UK band and cup sizes work, compare nearby sizes and explore detailed guides covering the full UK bra size sequence.
How Big Are UK Bra Cup Sizes?
Explore every UK bra cup size from AA to LL with visual examples, measurements, size comparisons and interactive tools.
Explore Cup Size GuidesBra Cup Size Chart
View the UK bra cup size order and understand the sequence of single and double cup letters used by UK lingerie brands.
View the Cup Size ChartBra Sister Sizes
Learn how cup volume changes with band size and compare related sizes that hold a similar cup volume.
Explore Sister SizesFind the Best Bra for Your Size, Shape and Needs
Browse our growing collection of bra buying guides organised by bra size, cup size and purpose. Every guide includes practical sizing advice, helpful resources and links to related bra fitting information.
Best Bras by Bra Size
Browse buying guides for individual UK band-and-cup combinations, including F to J cup sizes across a wide range of band sizes.
Find Bras in Your SizeBest Bras by Cup Size
Explore cup-size guides covering available band sizes, visual examples and bra recommendations across the UK cup-size sequence.
Browse Bras by Cup SizeBest Bras by Need
Browse our practical bra buying guides for sports bras, T-shirt bras, fuller busts, everyday comfort and other specific bra needs.
Explore Bra Buying GuidesFind Your Bra Size in 35 Popular Brands
Find your size in many of the UK's most popular lingerie brands. Compare UK band sizes, cup sequences and international conversions using our growing collection of brand size guides.
Marks & Spencer
UK band, cup and international size information.
Freya
UK size availability and conversion charts.
Bravissimo
UK band and cup availability with international conversions.
Panache
UK sizing charts and brand-size reference information.
Elomi
UK size availability and international equivalents.
Triumph
Brand cup sequence and international size guidance.
Browse all 35 published brand size guides including Fantasie, Curvy Kate, Wacoal, Goddess, Pour Moi and many more.
Expert Bra Fitting Advice
Learn how to fit your bra correctly, understand common sizing questions and solve everyday bra fit problems with our practical fitting guides.
Bra Fitting Advice
Follow step-by-step fit checks covering the band, cups, centre front, straps and underwires.
- Check whether the band is sitting correctly
- Identify cup overflow, gaping and wire problems
- Understand where bra support should come from
Understand Sister Sizes
Learn why changing the band size changes the cup volume, and how sister sizes keep a similar fit by changing both the band size and cup letter together.
- Compare related band-and-cup combinations
- Understand cup volume rather than cup letters alone
- Use sister sizes as a practical sizing guide
UK vs US Bra Sizes
Compare UK and US cup-size sequences and understand why the same cup letter can represent different sizes in each sizing system.
- Compare UK and US cup progression
- Understand single and double cup letters
- Use conversion guidance when shopping internationally
Why Trust The Lingerie Advisor?
The Lingerie Advisor combines more than 26 years of lingerie-industry experience with original interactive tools, illustrated size resources and clear, factual guidance designed to make bra sizing and fitting easier to understand.
Practical Advice Built on Industry Experience
I’m Tori, the founder of The Lingerie Advisor. After more than 26 years working in the lingerie industry, I created this website to provide clear, factual guidance on bra sizing, fitting, brand differences and lingerie shopping.
The website is designed as an independent, evergreen resource rather than a traditional blog. Its size guides, calculators and visual comparison tools are regularly reviewed and updated as available sizes and brand information change.
Read About The Lingerie AdvisorClear, Independent and Useful
- Original tools: Interactive calculators and visual comparison resources developed specifically for The Lingerie Advisor.
- Detailed size information: Brand guides, cup-size pages and conversion resources covering UK and international sizing systems.
- Independent editorial content: Advertisers and affiliate partners do not control our sizing advice or editorial recommendations.
- Evergreen resources: Pages are reviewed and updated as brand ranges, tools and available bra sizes change.
Read about The Lingerie Advisor, contact us or review our privacy, advertising and affiliate disclosures.