Why does cup size change with band size?

The answer is yes. As the Bra band size (the numbers) increases so does the cup as it naturally gets wider to sit properly on the band. So if you wear a 32C and your Mum wears a 36C then her bra, her cup sizes and her breasts will be larger than yours. It’s all dependent on the back (band) size.

How do bra cup sizes go up?

The cup size increases as you move from top to bottom on the chart. Bra sizes that share a row are called sister sizes, meaning they share the same cup volume (though they have different cup letters). For example, the row with bra sizes 36C, 38B, and 40A all have the same cup volume, but have different band sizes.

Do you add 4 inches to band size?

Many major department stores and American retailers take the ribcage measurement and add four inches (or five if it’s an odd-number) to obtain the band size.

What is the difference between band and cup size?

The band size is expressed as an even number of inches; it represents the measurement of your chest just below your breasts. The cup size is a letter that represents the difference between your band size and the measurement of your body at the fullest part of your breasts.

How do I know if my cup size is too small?

A bulge forms above the top of the cup. If the breast spills out over the edge of the cup forming an extra ‘bulge’, sometimes called a ‘double breast’, the cup is too small for your bust. The breast shouldn’t swell up between the shoulder straps or towards the armpit.

What happens if you change your bra band size?

If the cups fit your bust but the bra band size has to be changed, you will also need to change the cup size. For example, if you change from US 36D (EU 80D) to US 34D (EU 75D) then the cup will feel smaller (since a D-cup in 75D is smaller than a D-cup in 80D).

What size bra should I get to keep the same cup size?

If you want to keep the same cup size you should try 38B. You wear a bra 36C and want to go down a band size. You choose a band size 34. But when going down a band size the cups will change too. A 34C bra will have less cup volume than a bra in 36C. If you want to keep the same cup size you should try 34D.

What is the easiest bra size to change?

The bra band size (US 34, 36, 38 or EU 75, 80, 85 etc) is easier in the sense that it’s based on your under bust measurement alone, and is not a comparison to something else. Okay, so how does this help me? Adjust the bra cup size when changing the band size!

What is the correct cup size for a 34D bra?

Proper cup fit is influenced by band size. As the band size changes, so does the cup size. For every band size you go down, you should go up one cup. If you are in a 34D with a good cup fit, but want to go down to a 32 band, you would go to a 32DD for a tighter band with the same cup fit.