There are times when the bra size you regularly opt for doesn’t fit you. Ever wondered why you face this situation in spite of buying the bra size you’ve bought a million times before? Well, remember that several factors, such as the bra fabric, manufacturing variations, presence of underwires, cup shapes, and padding levels, might contribute to the way a bra fits you. This is where the concept of sister size comes into play.
What Is Sister Sizing?
Sister sizes can be a savior when the bra in your actual size doesn’t fit properly. In simple terms, sister sizes are equivalent bra sizes. The cup volume of your actual bra size and sister size bra remains the same. That’s why fitting experts recommend trying sister sizes when your original bra size doesn’t fit or is unavailable.
I Want to Know My Sister Size
Every bra size has four sister sizes, but when selecting sister-size bras, you can ideally consider the nearest two for the best fit.
Sister Size Up
For instance, if your bra size is 34C, your sister size up will be 36B (one band size higher and one cup size smaller).
Sister Size Down
Similarly, if your cup size is 34C, your sister down will be 32D (one band size lower and one cup size bigger).
Opt for a sister size up when the band of your actual size bra is tight or too small. On the other hand, go for a sister size down when your cup is too small.
Shyaway Bra Sister Size Chart
Looking for your perfect bra size? Shyaway bra size calculator will help you to measure your bra size.
| Bra Size | Sister Size Up | Sister Size Down |
|---|---|---|
| 30 Band Size | ||
| 30A | 32AA | 28B |
| 30B | 32A | 28C |
| 30C | 32B | 28D |
| 30D | 32C | 28DD |
| 32 Band Size | ||
| 32A | 34AA | 30B |
| 32B | 34A | 30C |
| 32C | 34B | 30D |
| 32D | 34C | 30DD |
| 32DD | 34D | 30DDD |
| 34 Band Size | ||
| 34A | 36AA | 32B |
| 34B | 36A | 32C |
| 34C | 36B | 32D |
| 34D | 36C | 30DD |
| 34DD | 36D | 32DDD |
| 36 Band Size | ||
| 36A | 38AA | 34B |
| 36B | 38A | 34C |
| 36C | 38B | 34D |
| 36D | 38C | 34DD |
| 36DD | 38D | 34DDD |
| 38 Band Size | ||
| 38A | 40AA | 36B |
| 38B | 40A | 36C |
| 38C | 40B | 36D |
| 38D | 40C | 36DD |
| 40 Band Size | ||
| 40A | 42AA | 38B |
| 40B | 42A | 38C |
| 40C | 42B | 38D |
| 40D | 42C | 38DD |
| 40DD | 42D | 38DDD |
| 42 Band Size | ||
| 42A | 44AA | 40B |
| 42B | 44A | 40C |
| 42C | 44B | 40D |
| 42D | 44C | 40DD |
| 42DD | 44D | 40DDD |
| 44 Band Size | ||
| 44A | 8AA | 42B |
| 44B | 48A | 42C |
| 44C | 48B | 42D |
| 44D | 48C | 42DD |
Should I Definitely Opt for Sister Size Bras?
- Please remember that there are many reasons why a sizing bra doesn’t fit you. Note which attributes of your bra need to be corrected in order to achieve the right fit. This will help you get a bra that fits the way it should.
- It is also important to understand the physical changes in your body that may lead to a misfit. Puberty and pregnancy are stages when your normal bra would do no justice. So, trying sister sizes would be the ideal option here.
- Moreover, an ill-fitting bra can cause a lot of discomfort, neck and shoulder pain, and posture problems. So, it is better that you go for sister sizes rather than stick with the same uncomfortable bra.
- If you are still not satisfied with the sister sizing concept, we recommend you measure yourself again for the correct bra size before proceeding with the shopping.
The Most Common Sister Size Questions Answered
1. Do Sister Sizes Really Work?
Yes, sister sizes work well, but there is a certain limit to them. With sister sizing, you can either go one size up or down, but you can’t choose two or more sizes. Going beyond that will change the overall proportion of the bra, resulting in a poor fit.
2. Is the DD cup size the same as the E-cup size?
No. Both the cup sizes come in the same size, but the size of the band may vary.
3. How Do Sister Sizes Work?
- Sister Size Up
“Sister size up” means one size larger than your current band size and one letter smaller than your current cup size. For example, if your bra size is 34C, then your next size up will be 36B.
- Sister Size Down
“Sister size down” means one size smaller than your current band size and one letter larger than your current cup. For example: if your size is 34C, your sister size down will be 32D.
4. Should I go up a Cup Size or Band Size?
The proper cup fit is determined by the band size. If the band size changes, so does the cup size. For every band size, if you go one size down, you must go one size up in the cup.