34B Bra Size Chart

Looking for 34b bra size chart? If so, you are at the right place. Scroll down to see the chart in both US and International sizes.

How big is 34B bra size?

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Underbust (IN)	Overbust (IN)	Underbust (CM)	Overbust (CM)
30-32 in	34-36 in	76-81 cm	89-91 cm

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Is 34B small medium or large?

34B size is smaller than the average. Therefore, it is considered small medium.

What is a size up from 34B?

If you wear a 34B and realize that the cup fits but the band is too small, you can size up. That will mean going up two band sizes from the 34B to get the right band size, which would be 36A. This is known as a sister size, i.e., the bra has the same cup size but a different band size.

See the sister size chart for more information.

Is 34B a good size?

34B is one of the most popular bra sizes in the country. It’s not too big as a C nor too small as an A cup. However, when compared to all other bra sizes, it is considered small medium. That’s a good size for most people.

For perspective, here is a 34B breast example by a model:

Model wears a 34B Warner’s No Side Effects T-Shirt Bra.