Bra Size Guides

UK Bra Cup Size Chart – Cup Sizes in Order, Measurement & Progression

This UK bra cup size chart explains how bra cup sizes progress in order, how the measurement system works, and how each cup size relates to the difference between band size and bust measurement.

Bra Cup Sizes in Order

The UK bra cup sizes in order follow this sequence:

AA → A → B → C → D → DD → E → F → FF → G → GG → H → HH → J → JJ → K → KK → L → LL

Each step in the sequence represents approximately a one inch increase between the bra band size and the fullest bust measurement.

This bra cup size progression chart explains how bra cup sizes increase as the difference between the bra band size and the fullest bust measurement changes.

This UK bra cup size chart explains how bra cup sizes increase as the difference between the band size and the fullest bust measurement changes. In the UK bra sizing system, each step typically represents about a one-inch increase, which determines the next cup size in the sequence.

If you are unsure of your starting size, begin with our Bra Size Calculator and follow the measuring steps in our Bra Fitting Advice. You can also compare sizes across brands using our Bra Size Converter.

Cup letters alone don’t always show how large a bra size appears. You can also read our guide explaining how big GG cup sizes are and how volume changes across different band sizes.

Each step in the UK bra cup size sequence typically represents a one-inch increase in the difference between the band size and the fullest bust measurement. For example, a DD cup corresponds to about a 5 inch difference, while a GG cup corresponds to around a 10 inch difference. The measurement chart below shows how these cup sizes progress across the UK bra sizing system.

Explore Cup Sizes by Band Size

To better understand how each cup size behaves across different band measurements, you can explore our detailed guides for each cup size:

• F cup bras by band size
• FF cup bras by band size
• G cup bras by band size
• GG cup bras by band size

These guides break down how cup volume changes with band size and link to the best bras for each specific size.

UK Cup Size Sequence Explained

Many people search for bra sizes in order to understand how cup letters progress across the UK sizing system. Unlike some international systems, UK bra sizes include several double-letter cup sizes that create smaller steps between volumes.

The typical UK bra cup size order is:

AA → A → B → C → D → DD → E → F → FF → G → GG → H → HH → J → JJ → K → KK → L → LL

This UK bra cup size chart explains how bra cup sizes increase as the difference between the band size and the fullest bust measurement changes. In the UK bra sizing system, each step typically represents about a one-inch increase, which determines the next cup size in the sequence.

You can explore detailed guides explaining how individual cup sizes fit within this sequence, including: how big F cups are, how big GG cups are and how big H cups are.

UK Bra Cup Size Chart (Band vs Bust Difference)

The UK bra cup size order follows a structured progression that includes several double-letter cup sizes such as DD, FF and GG. These additional steps provide a more gradual increase between cup sizes and help create a wider range of available fits.

AA → A → B → C → D → DD → E → F → FF → G → GG → H → HH → J → JJ → K → KK → L → LL

If you want to explore how individual cup sizes fit within this sequence, you can also see our detailed guides for FF cup bras, GG cup bras and HH cup bras.

If you want to compare neighbouring sizes in more detail, see our guide explaining the difference between F, FF and G cup sizes.

UK Bra Cup Size Chart – Difference Between Band Size and Bust

The bra cup size chart below shows how UK cup sizes correspond to the difference between the bra band size and the fullest bust measurement.

Popular Bra Sizes Explained

Many people searching a bra cup size chart are also looking for guidance on specific bra sizes. Below are some of the most commonly searched UK bra sizes, along with detailed guides explaining fit, structure and recommended styles.

• Best Bras for 34GG – supportive everyday bra recommendations for this balanced fuller-bust size.
• Best Bras for 36GG – structured styles designed for stable support and comfort.
• Best Bras for 38GG – bras chosen for consistent lift and reliable band support.
• Best Bras for 34G – everyday bras recommended for balanced G-cup support.
• Best Bras for 36G – supportive styles suitable for fuller bust shapes.

These band-and-cup combinations are among the most frequently searched bra sizes because they sit near the middle of the fuller-bust size range used by many UK brands.

Common Cup Size Comparisons

Many people compare neighbouring cup sizes to understand the progression. Each step in the UK cup sequence represents a one-inch increase.

• Is FF bigger than F? Yes. FF is one cup size larger than F.
• Is G bigger than FF? Yes. G follows FF in the UK cup sequence.
• Is GG bigger than G? Yes. GG is the next cup size after G.
• Is H bigger than GG? Yes. H comes after GG.

Where Different Cup Sizes Sit on the Size Scale

Many people researching bra cup sizes want to understand how different sizes compare overall. In the UK sizing system, cup sizes progress gradually from smaller volumes such as A and B cups through to larger cup sizes including G, GG, H and beyond.

However, cup letters alone do not represent a fixed breast size because cup volume increases with band size. For example, a 30GG has a smaller overall volume than a 38GG, even though the cup letter is the same.

This is why bra sizing always combines both the band size and cup size to determine the correct fit.

Example Cup Sizes by Band Measurement

Because cup size works together with band size, the same cup letter represents different bust measurements depending on the band. The examples below illustrate how several cup sizes appear across common band sizes.

What Are Double Cup Sizes?

Double cup sizes such as DD, FF, GG and HH appear within the extended UK bra sizing system. They represent the same one-inch progression as other cup sizes and simply provide additional steps between single-letter cups.

The UK bra cup size order includes several double cup sizes such as DD, FF and GG, which help create a more gradual progression between cup sizes.

Many UK lingerie brands such as Freya, Panache and Bravissimo use this extended cup size sequence.

For a full explanation of how these sizes work, see our Double Cup Bra Sizes Guide.

Explore Individual Cup Guides

The guides below explain how each cup size fits within the UK bra sizing sequence, including band combinations and common bra styles available in each size.

Bra Cup Size Questions

How to Work Out Your Bra Cup Size

Bra cup size is determined by the difference between your bra band size and your fullest bust measurement. Each inch of difference typically corresponds to the next cup size in the UK bra sizing sequence.

For example:

• 4 inch difference → D cup
• 5 inch difference → DD cup
• 6 inch difference → E cup
• 7 inch difference → F cup

To find your starting size, measure your bust and band using our Bra Size Calculator. You can then confirm the fit using our Bra Fitting Advice.

Find Your Correct Bra Size

If you are unsure of your bra size, start by measuring your bust and underband using our Bra Size Calculator.

You can then confirm your fit using our Bra Fitting Advice and compare sizes across brands using the Bra Size Converter.