Bra Sister Size Chart - Find the Best Fit
Sister sizes are a great way to find alternative bra sizes that provide a comfortable and supportive fit. Use the chart below to discover your sister sizes.
What Are Bra Sister Sizes?
Bra sister sizes are bra sizes that have the same cup volume but different band sizes. For example, a 34C, 32D, and 36B have the same cup volume but vary in band size. If your current size doesn’t fit well, a sister size may be the solution.
Bra Sister Size Chart
| Your Size | One Band Smaller (Tighter) | Your Size | One Band Larger (Looser) |
|---|---|---|---|
| 28A | - | 28A | 30AA |
| 30A | 28B | 30A | 32AA |
| 32A | 30B | 32A | 34AA |
| 34A | 32B | 34A | 36AA |
| 36A | 34B | 36A | 38AA |
| 38A | 36B | 38A | 40AA |
| 30B | 28C | 30B | 32A |
| 32B | 30C | 32B | 34A |
| 34B | 32C | 34B | 36A |
| 36B | 34C | 36B | 38A |
| 38B | 36C | 38B | 40A |
| 30C | 28D | 30C | 32B |
| 32C | 30D | 32C | 34B |
| 34C | 32D | 34C | 36B |
| 36C | 34D | 36C | 38B |
| 38C | 36D | 38C | 40B |
| 30D | 28DD | 30D | 32C |
| 32D | 30DD | 32D | 34C |
| 34D | 32DD | 34D | 36C |
| 36D | 34DD | 36D | 38C |
| 38D | 36DD | 38D | 40C |
| 30DD | 28E | 30DD | 32D |
| 32DD | 30E | 32DD | 34D |
| 34DD | 32E | 34DD | 36D |
| 36DD | 34E | 36DD | 38D |
| 38DD | 36E | 38DD | 40D |
How to Use the Bra Sister Size Chart?
- Find your current bra size in the "Your Size" column.
- If your band is too tight, move to the "One Band Larger" column for an alternative size.
- If your band is too loose, move to the "One Band Smaller" column for an alternative size.
- Try on the suggested sister sizes to find the most comfortable and supportive fit.
Benefits of Bra Sister Sizes
- Provides more size options for a better fit
- Helps you find bras in brands with varying sizing standards
- Allows adjustments for weight changes or body shape variations
Example of Using Bra Sister Sizes
If you usually wear a 34C and the band feels too tight, try a 36B. If the band feels too loose, try a 32D. Both sizes will offer a similar cup volume with different band adjustments.
Tips for Finding the Right Fit
- Always try on multiple sizes to see what feels best.
- Consider sister sizes when your current size is not available.
- Check the fit of both the band and cups to ensure comfort and support.