What is a sister size bra?

Yes, Sister sizes are sizes that have the same cup capacity but a different band size. For example, someone who wears a 32C could also wear a 30D and a 34B depending on if they want a tighter or looser fitting bra. Make sure you have been fitted and know your true cup size before trying to work out sister sizes.

Do sister size bras fit the same?

Sister sizes are bras with the same cup volume. So, in theory your sister size could be swapped for your true size and fit just as perfectly, while the band would fit a bit tighter or a bit looser than usual.

Do bra sister sizes work?

Sister sizes do work well, but it's worth remembering that there are limits to what you can achieve. Sister sizing one up or one down is fine, and you might even be able to push it to two. But beyond that, the proportions of the bra will have changed so much that the bra probably won't be a good fit.

What does a sister size bra mean?

Your current bra size has “Sister Sizes” - alternate sizes where the cup volume stays the same even though the band size and cup letter changes. Finding a Sister Size requires a set of one-size shifts, in opposite directions (e.g., 34C and 32D).

What are sister cup sizes?

Find your current bra size, and your sister sizes are the ones listed in the same row (going across). So, for example, if you're a 34C, your sister sizes are 30E, 32D, 36B, and 38A. Each row is a family of sister sizes. Let that sink in for a moment: an A cup can also be an E cup.

How To Sister Size Bras | What is Sister Sizing?

What is a sister size up?

Sizing Up: One size larger than your current band size and one letter (A, B, C, D) smaller than your current cup size. Eg: If you wear a 32C, your sister size up will be 34B.

Is 36C and 34D the same?

For example, a 36C is the same cup size as a 34D and 32DD. This is because as the back size, or the number, gets smaller, the difference between your back and bust increases. This causes the cup size, or the letter, to become larger."

Is a 34DD the same as a 36D?

Cup size represents the volume of your bosom and is completely relative to your band size. For example, a 36D holds 710cc of breast tissue - the same as a 34DD, 32F and 30G.

How much does a DDD breast weigh?

DDD cups usually weigh around 5-6 pounds, which is roughly 2.5-3 pounds for each breast.

What is the difference between 34a and 34B?

For reference, any cup with a 34 band size is considered a “true cup” size. This means that a 34AA is in fact a AA cup, just as how a 34B is a true B cup. However, a 34B is also equivalent in cup volume to a 30D, 32C, and a 36A. All three aforementioned sizes are a B cup despite what their cup letter indicates.

Is 36A the same as 34B?

Another example, a 34B and 36A are the same cup size. The only difference is the band size. The 36 is a bigger band size than the 34. Here's an example of some other sister sizes.

Is DD cup bigger than D?

There is a difference of between 2cm and 2.54cm (depending on where you shop) between each cup size, so an AA is an inch smaller than A and DD is an inch bigger than D.

Should I go up a cup size or band size?

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.

How do you know if your bra cup is too big?

There's a gap at the top of the cups.

When you look down at your bra do you notice space between your breasts and the cup? If so, it's too big. If you aren't able to see any gaps while standing up, try leaning over while looking into a mirror. If there is extra space in your cups it's time for a new size.

How do you know if your cup size is too small?

It's more common for women to be wearing a cup size that's too small than too big. An obvious sign that the cups are too small is if the underwire presses in at the sides of the breasts or if you have red marks on your breasts when you take your bra off in the evening.

What is my bust size if I wear a 36C?

How Big Is 36C? If your bra size is 36C, your band is typically 32 to 34 inches, and your bust measurements are 38 to 39 inches. Since you are a c cup, your band size is typically three inches less than your bust size.

What is the sister bra size for a 32B?

So if a bra is a size 32B, its sister size “up” would be 34A, and its sister size “down” would be 30C. Despite having different numbers, these bras all hold the same amount of tissue in their cups, with different band lengths.

How do you use sister size?

This is one band size larger than your current band size and one cup size smaller than your current Cup. For example, if you wear a 34C, your Sister Size UP would be 36B.

Is a DD cup the same as an E cup?

That is where the confusion comes in so let me make it clear. A DD cup = E for full figure bras, DDD = F, but if you are used to buying a standard bra that comes in cup sizes B-DD and no higher, there will be about a half cup size increase between the DD in a standard style and a DD/E in a full figure style.

What is the most common bra size?

The average bra size in the United States is 34DD. This figure can vary by country.

Is a DDD the same as an F?

Is a DDD the same as an F? It might seem confusing, but yes a DDD is the same as an F—at times they are labeled differently based on the brand. After size D you can either go up to size DD which is the bra size equivalent to size E, size DDD which is equivalent to size F, and size DDDD which is equivalent to size G.