Finding the perfect bra can often feel like a quest for the holy grail. It’s a balance of comfort, support, and style—but what happens when your usual size doesn’t seem quite right or when it's unavailable? Enter sister sizes—a term not everyone is familiar with. At Abbraccio, we believe every woman deserves a bra that fits her perfectly, and understanding your sister sizes can help you discover just that.
What Are Sister Sizes?
Sister sizes are a range of sizes that have the same cup volume but a different band size. If you find that your usual bra size isn’t fitting quite right, your sister size might just be the solution. The magic lies in how cup and band sizes correlate: when you adjust one, you may need to adjust the other to keep the cup volume consistent.
For example, if your usual size is a 34C, your sister sizes would be:
36B: A larger band size with a smaller cup
32D: A smaller band size with a larger cup
It’s all about finding a combination that works best for your unique shape, and it can offer an easier solution if your current size feels too tight or too loose.
How Sister Sizes Work
Let’s break it down to make it clearer:
Increasing the Band Size: If your band feels too tight, you can go up a band size while going down a cup size. So, a 34C could become a 36B or a 32D. By adjusting the band and cup in this way, you’re maintaining the same cup volume, just with a different fit.
Decreasing the Band Size: On the flip side, if your band feels too loose, you can go down a band size and increase the cup size. For example, a 34C could also become a 32D or a 36B. This change ensures that you get the support you need without compromising on comfort.
It’s important to note that while sister sizes will give you the same overall cup volume, the fit will still feel different based on your body shape and preferences. Some women might prefer the snugness of a smaller band, while others might prefer the freedom of a larger band.
Why Sister Sizes Are Important
Bra sizing can be tricky—your size may vary depending on the brand, style, or even how your body changes over time. Sister sizes help you maintain a better fit when one of those factors changes. Understanding and utilizing sister sizes can:
Solve sizing issues: If your typical size feels too tight or too loose, your sister size can offer a better alternative.
Provide more options: When certain sizes are out of stock, sister sizes give you a backup plan to find a close fit without compromising on comfort or support.
Enhance comfort: Sometimes, all it takes is a small change in band or cup size to make a huge difference in how your bra feels throughout the day.
How to Find Your Sister Size
Finding your sister size is simple once you know your usual bra size. Here’s a quick guide:
If you go up one band size, you will need to go down one cup size. (E.g., 34C → 36B, 34D → 36C)
If you go down one band size, you will need to go up one cup size. (E.g., 34C → 32D, 34B → 32C)
You can experiment with different sister sizes to see which one feels the most comfortable and supportive.
When to Try a Sister Size
Here are a few scenarios when it might be worth exploring sister sizes:
Your bra band feels too tight or too loose: If you’re constantly adjusting the band or feel like your bra isn’t sitting comfortably, trying a sister size can help.
You’ve gained or lost weight: Weight fluctuations can affect your band size and cup size. Sister sizes are a great way to adjust without needing a whole new set of bras.
You’re between sizes: If you’re finding it difficult to decide between two sizes, sister sizes can give you an alternative that may fit better.
The world of lingerie sizing can be complex, but sister sizes are a helpful tool that ensures you never have to settle for an uncomfortable fit. By understanding how sister sizes work and experimenting with different combinations, you can find the perfect bra that provides both support and luxury—because you deserve nothing less.
If you’re unsure about your sister size or need help choosing the right fit, feel free to reach out to our customer support team. We’re here to make sure you experience the ultimate in comfort and luxury.