Bras, C cup

A C cup corresponds to a difference of approximately 16 centimeters between the bust circumference and the underbust circumference. This is the point at which bra construction begins to genuinely impact comfort. In practice, the letter describes the difference in circumferences, not the absolute size of the breasts: the same cup size for a 70 and 90 band will be a completely different volume.

From a C cup upwards, it's worth paying attention to the width of the underbust band and whether the underwire fully encompasses the breast up to the armpit. Compression sports bras can still work, but for running, a model with separate cups will be more effective.

Check your size with two measurements: measure your underbust circumference tightly, on an exhale, and your bust circumference loosely, at its widest point. The difference indicates the letter, and the underbust circumference indicates the number. Each size has sister sizes: the same bust will also fit in a band one size smaller with a larger cup letter, and in a band one size larger with a smaller cup letter. If your size is temporarily unavailable in a specific model, this is the first place to look.

The underbust band should lie horizontally and allow two fingers to be pulled under it; the underwire should rest on your ribs, not on your breast; and the straps should not leave marks. Wash in a laundry bag at 30 degrees, fastened, and dry flat. Free delivery on orders over 199 PLN, 14-day returns.

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  • Selene Violeta Padded Bra Beige with Wide Sides
    Plus sizes

    Selene

    Selene Violeta Padded Bra Beige with Wide Sides

    Selene Violeta Padded Bra Beige with Wide Sides

    103,97 zł

    23 rozmiary

  • Selene Violeta black padded bra with wide wings
    Plus sizes

    Selene

    Selene Violeta black padded bra with wide wings

    Selene Violeta black padded bra with wide wings

    103,97 zł

    23 rozmiary

  • Selene Med 8002 Post-Surgical Bra, Front Closure
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    Selene

    Selene Med 8002 Post-Surgical Bra, Front Closure

    Selene Med 8002 Post-Surgical Bra, Front Closure

    98,99 zł

    3 rozmiary

  • Soft underwired bra Selene Mariluz black with lace
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    Selene

    Soft underwired bra Selene Mariluz black with lace

    Soft underwired bra Selene Mariluz black with lace

    81,99 zł

    32 rozmiary

  • Selene Nadia wireless padded bra in black, with wide sides
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    Selene

    Selene Nadia wireless padded bra in black, with wide sides

    Selene Nadia wireless padded bra in black, with wide sides

    99,98 zł

    9 rozmiarów

  • Selene Betty seamless soft embroidered non-wired bra
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    Selene

    Selene Betty seamless soft embroidered non-wired bra

    Selene Betty seamless soft embroidered non-wired bra

    99,98 zł

    11 rozmiarów

  • Selene Blanca white soft cotton wireless bra
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    Selene Blanca white soft cotton wireless bra

    Selene Blanca white soft cotton wireless bra

    83,99 zł

    21 rozmiarów

  • Selene Elvira black microfiber wire-free minimizer bra
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    Selene

    Selene Elvira black microfiber wire-free minimizer bra

    Selene Elvira black microfiber wire-free minimizer bra

    93,97 zł

    26 rozmiarów

  • Selene Nadia wireless padded bra, beige, wide sides
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    Selene

    Selene Nadia wireless padded bra, beige, wide sides

    Selene Nadia wireless padded bra, beige, wide sides

    99,98 zł

    9 rozmiarów

  • Selene Blanca cotton soft bra beige wireless
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    Selene

    Selene Blanca cotton soft bra beige wireless

    Selene Blanca cotton soft bra beige wireless

    89,98 zł

    20 rozmiarów

  • Selene Marivi wireless bra, beige, printed fabric
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    Selene

    Selene Marivi wireless bra, beige, printed fabric

    Selene Marivi wireless bra, beige, printed fabric

    99,49 zł

    5 rozmiarów

  • Soft underwired bra Selene Mariluz in beige with lace
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    Selene

    Soft underwired bra Selene Mariluz in beige with lace

    Soft underwired bra Selene Mariluz in beige with lace

    81,99 zł

    30 rozmiarów

  • Selene Marivi White Wire-Free Bra, printed fabric
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    Selene

    Selene Marivi White Wire-Free Bra, printed fabric

    Selene Marivi White Wire-Free Bra, printed fabric

    98,99 zł

    5 rozmiarów

  • Selene Vilma strapless underwired bra beige
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    Selene

    Selene Vilma strapless underwired bra beige

    Selene Vilma strapless underwired bra beige

    114,70 zł

    3 rozmiary

  • Lormar Diva 450L underwired spacer bra, smooth band

    Lormar

    Lormar Diva 450L underwired spacer bra, smooth band

    Lormar Diva 450L underwired spacer bra, smooth band

    108,86 zł

    7 rozmiarów

  • Sielei 1452 white soft wireless bra made of organic cotton
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    Sielei

    Sielei 1452 white soft wireless bra made of organic cotton

    Sielei 1452 white soft wireless bra made of organic cotton

    78,10 zł

    6 rozmiarów

  • Selene Marivi black wire-free bra, printed fabric
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    Selene

    Selene Marivi black wire-free bra, printed fabric

    Selene Marivi black wire-free bra, printed fabric

    110,00 zł

    8 rozmiarów

  • Selene Nora front-closure sports bra in beige
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    Selene

    Selene Nora front-closure sports bra in beige

    Selene Nora front-closure sports bra in beige

    107,41 zł

    8 rozmiarów

  • Selene Nora black front-fastening sports bra
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    Selene

    Selene Nora black front-fastening sports bra

    Selene Nora black front-fastening sports bra

    107,41 zł

    11 rozmiarów

  • Infiore New Stile Microshape soft wireless bra
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    Infiore

    Infiore New Stile Microshape soft wireless bra

    Infiore New Stile Microshape soft wireless bra

    86,20 zł

    3 rozmiary

  • Lormar One Ultrashine Padded Underwired Bra Black
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    Lormar

    Lormar One Ultrashine Padded Underwired Bra Black

    Lormar One Ultrashine Padded Underwired Bra Black

    75,99 zł

    10 rozmiarów

  • Lormar One Ultrashine Padded Underwired Bra Cream
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    Lormar

    Lormar One Ultrashine Padded Underwired Bra Cream

    Lormar One Ultrashine Padded Underwired Bra Cream

    75,99 zł

    13 rozmiarów

  • Selene Frida seamless cream underwire soft bra
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    Selene

    Selene Frida seamless cream underwire soft bra

    Selene Frida seamless cream underwire soft bra

    109,74 zł

    12 rozmiarów

  • Lormar Dea 453L black lace soft underwire bra
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    Lormar

    Lormar Dea 453L black lace soft underwire bra

    Lormar Dea 453L black lace soft underwire bra

    108,86 zł

    13 rozmiarów

What to look out for

In practice the letter describes the difference between two measurements, not the absolute size of the breast: the same cup on a 70 band and on a 90 band is a completely different volume.

What else is worth checking

From a C cup upwards it is worth paying attention to the width of the underbust band and to whether the underwire encloses the whole breast right up to the armpit. Compression sports models still work, but for running a model with separate cups is the better choice.

Fabrics and comfort

Check your size with two measurements: take the underbust measurement firmly, breathing out, and the bust measurement loosely, at its widest point. The difference gives the letter, the underbust measurement - the number. Every size has its sister sizes: the same bust also fits one band smaller with the next letter up, and one band larger with the next letter down. If your size is temporarily unavailable in a particular model, that is the first place worth looking.

Delivery and returns

The underbust band should sit horizontal and pull away about two fingers, the underwire should rest on the ribs and not on the breast, and the straps should not leave marks. Wash in a laundry bag at 30°C with the hooks done up, and dry flat. Orders over PLN 199 ship free, and you have 14 days to return your order.

A C cup is not a fixed volume - it describes a difference of about fifteen centimetres between the bust measurement and the underbust measurement. That is why 70C, 80C and 90C hold different amounts of tissue despite the same letter. This collection brings together C cup models in the band sizes we stock, so that styles can be compared and the size chosen within a particular model.

Fitting starts with the band. A correct band runs horizontally, sits closely and does not ride up when you raise your arms. Only then do you check the cup: tissue should not spill out at the top or the side, and the centre gore between the cups should touch the chest. If the gore stands away, the cup is too small, although it can feel like the opposite.

What to watch out for? Spare room in the fastening - do up a new bra on the loosest row. The fact that sizing differs between manufacturers, so the label from your previous bra will not replace the size guide. And sister sizes: if a given model is unavailable in your size, one band larger with one letter smaller, or the other way round, can be the alternative.

Practically every construction is available in a C cup. A model with a smooth moulded cup gives the most neutral line under fine knits. A soft cup with no padding is more comfortable all day and follows the natural shape better. A balconette lifts the bust and opens up the neckline. Lightly padded lace models are a compromise between looks and support. Sports versions should have a wide band and wider straps.

Frequently asked questions

Does a C cup always mean the same size?

No. The letter describes the difference between measurements, so a 70C holds less than a 90C despite the same letter.

What are sister sizes?

They are pairs with a similar cup volume, for example 75C and 80B. They differ in the band measurement.

How do I know that the cup is too small?

Tissue spills out at the top or the side, and the centre gore between the cups does not sit flat against the chest.

Which style should I choose under fine knits?

A model with a smooth moulded cup. Lace and seams on the cup show through thin fabric.