Finding the best bra for your size is easier when you start with both your cup size and band size. This page brings together our cup-size buying guides, helping you browse bra recommendations by UK cup size.
Cup size alone does not tell the full story because a 30F, 34F and 40F all have different cup volumes. Use the cup-size guides below as a starting point, then choose your exact band size for more specific bra recommendations and fitting information.
If you are unsure of your current size, start with our Bra Size Calculator, compare sizing systems with our Bra Size Converter, or read our Bra Fitting Advice before choosing a bra.
Choose your UK cup size below, then select your band size to find bra recommendations and size-specific guidance for your exact bra size.
These guides organise bra recommendations by cup size, then by band size, so you can quickly find information for your exact UK bra size.
The examples below use the same 34 band size to show how cup volume increases through the UK cup-size sequence. Bra recommendations depend on both band size and cup size, but keeping the band size consistent makes it easier to compare the relative cup volumes.
If you are searching for the best bras by cup size, understanding how cup volume changes across the size range can make it easier to choose the correct guide for your measurements.
These diagrams are simplified educational illustrations designed to show relative cup volume. Individual breast shape, body shape and bra style can affect how a size appears in practice.
When searching for the best bras by cup size, it is important to remember that the cup letter only forms part of the full bra size. A bra size combines both the band size and cup size, so a 32G, 36G and 40G are different sizes even though they share the same cup letter.
Band size changes the overall cup volume, while bra construction also varies between styles. Features such as cup shape, wire design, strap width, side panels and fabric construction can differ from one bra to another, so it is useful to compare recommendations for your exact band-and-cup combination rather than relying on cup letter alone.
Our cup-size guides group bras first by UK cup size and then by band size, helping you find the individual guide for your exact measurements and browse the styles currently available in that size.
If you are unsure which guide to use, start with our Bra Size Calculator, compare sizing systems with our Bra Size Converter, or check our Bra Fitting Advice.
If you want to understand how cup sizes compare visually before choosing a bra, these guides explain how UK cup sizes increase across different band sizes.
These comparison guides explain how neighbouring UK cup sizes differ and how cup volume progresses through the UK bra sizing system.
Use these guides to check your size, compare sizing systems and understand how UK bra sizing works before buying.
After exploring bra sizes by cup, browse our Best Bras by Size directory to find buying guides for your exact UK band-and-cup size. The directory covers all 220 currently manufactured UK bra sizes and shows which buying guides are already available.
These guides organise bra recommendations by cup size, then by band size, so you can quickly find information for your exact UK bra size.
If you want to understand how cup sizes compare visually before choosing a bra, these guides explain how UK cup sizes increase across different band sizes.
These comparison guides explain how neighbouring UK cup sizes differ and how cup volume progresses through the UK bra sizing system.
The live cup-size buying guides currently run from AA to J cup. Choose your cup size above, then select your band size to browse recommendations for your exact UK bra size.
Bra sizing systems vary around the world, but most UK brands use the standard UK sizing system discussed throughout this guide. If you would like to learn more about the history and development of bra sizing, see the Wikipedia article on bra sizing.
