30 inch bust in cm, and the sizes it fits

Which bra size is a 30 inch bust?

A bra size needs two measurements. Your underbust (snug round the ribcage, just under the bust) sets the band; the gap between bust and underbust sets the cup. With a 30 inch bust:

A 30 inch bust sits on a band below 30, the smallest we make. Our S starter and sports bras are the closest fit; they are soft and stretchy, so they sit gently rather than tight.

Your So Glamy size

Camisoles and night suits are sized by bust, so a 30 inch bust is S in our camisoles and night suits, our smallest size (made for a 32–34 inch bust). The stretch cotton lycra sits a little relaxed on a 30 inch bust.

What suits a 30 inch bust

A bust this size is common for teenagers and for petite, slim frames. Light, non-padded coverage is usually all that is needed: a soft starter bra or a slip-on sports bra, rather than a moulded cup with nothing to fill it.

Measure the underbust as well before choosing a bra. On a small frame the band does almost all the work, and a band that is too loose rides up the back however well the cup sits.

In stock in S today

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  Save Cotton Camisole for Women – Stretch Cotton Lycra with Adjustable Spaghetti Straps in Baby Pink Colour to wishlistLoved

  So Glamy

  Cotton Camisole for Women – Stretch Cotton Lycra with Adjustable Spaghetti Straps in Baby Pink Colour

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  5.0| 152

  2 Sizes

How to measure at home

1. Measure your underbust. Wearing an unpadded bra or none at all, run the tape snugly around your ribcage, directly under your bust. Keep it level and breathe out normally.
2. Measure your bust. Run the tape around the fullest part of your bust. Keep it level and don't pull it tight — the tape should sit flat without compressing.
3. Find your size. Your underbust gives your band size. The difference between bust and underbust gives your cup. Enter both above and we'll do the maths.

Use the bra size calculator · Step-by-step measuring guide

Questions about a 30 inch bust

What is a 30 inch bust in cm?

76.2 cm. Any bust measurement from 75 to 77 cm rounds to 30 inches.

76 cm bust is how many inches?

29.9 inches, which counts as a 30 inch bust for sizing.

Is a 30 inch bust small, medium or large?

It is S in our camisoles and night suits, our smallest size (made for a 32–34 inch bust). The stretch cotton lycra sits a little relaxed on a 30 inch bust.

What bra size is a 30 inch bust?

It depends on your underbust, which sets the band. Measure snugly under the bust and use the bra size calculator.