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How to Find the Right Bra for You: Complete Guide to Size, Cup and Support

How do you know which bra size is right for you?

To find the correct bra size, you need to measure:

  • your underbust measurement, i.e. the circumference of your torso directly underneath your breasts;
  • your bust measurement, i.e. the circumference of your breasts at their fullest point.

Combining these two measurements allows you to determine both the most suitable band size and cup size.

As a general guide:

Underbust (cm) Corresponding size
65 cm Size I
70 cm Size II
75 cm Size III
80 cm Size IV
85 cm Size V
90 cm Size VI

Wearing the correct size can help improve everyday comfort, promote a more natural posture and provide adequate support for your breasts.

How do you measure your bust to choose the right bra?

To measure your bust correctly:

  1. Measure your underbust while keeping the measuring tape parallel to the floor.
  2. Measure your bust at nipple level.
  3. Consult a size guide to identify the correct combination of band and cup size.

An accurate measurement is the first step towards finding a comfortable and supportive bra.

What are the signs that your bra is not the right size?

Your bra may not be the correct size if:

  • the back band rides up;
  • the straps dig into your skin;
  • your breasts spill out of the cups;
  • there are gaps inside the cups;
  • the centre gore does not sit against your chest;
  • the underwire presses into your breast tissue.

If you notice one or more of these signs, it may be worth trying a different size or cup size.

What is a sister size?

Sister sizes are bra sizes that have a similar cup volume but a different underbust measurement.

For example, if your bra band feels too tight but the cups fit correctly, you can try a size with a larger band and a slightly smaller cup.

Conversely, if the band is too loose, you can choose a smaller band size combined with a slightly larger cup.

Trying a sister size can help you find a better balance between comfort, support and fit, while maintaining a cup volume that suits your breasts.

Which bra should you choose for a fuller bust?

For a fuller bust, it is important to choose styles that provide support, comfort and balanced weight distribution.

Suitable options may include:

  • minimizer bras, which visually reduce the appearance of volume;
  • shaping bras, which provide enhanced support;
  • styles specifically designed for medium and fuller busts;
  • underwired bras that offer enhanced support.

The right choice depends on the shape of your breasts, the level of support you want and how you plan to wear the bra.

Plus Size Collection

Frequently Asked Questions

How do I know my cup size?

Your cup size is determined by comparing your bust measurement with your underbust measurement.

Is it normal for my bra size to change over time?

Yes. Changes in weight, age, pregnancy, breastfeeding or hormonal fluctuations can affect your breast size.

Do all bra styles fit in the same way?

No. Balconette, push-up, bralette, triangle and underwired bras can all have different fits.

Which bra is the most comfortable?

The most comfortable bra is one that combines the correct size, the right cup, adequate support and a shape that suits your body type.

How to Find the Right Bra for You: Complete Guide to Size, Cup and Support
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