Are You Frustrated When Your Loved Bra is Sold Out? No Worry! Discover the Magic of Sister Sizes!

There's nothing more frustrating than finding the perfect bra, only to discover that your size is sold out. Whether it's a stylish lace piece, a comfortable everyday bra, or a special occasion item, the disappointment is real. But don’t fret! The concept of "sister sizes" might just be the solution to your problem.


What are Sister Sizes?

Sister sizes are alternative bra sizes that have the same cup volume as your regular size but with a different band size. This means that if your go-to size is unavailable, you can still find a bra that fits comfortably and offers the same support and shape. Understanding sister sizes can significantly expand your options and help you find a great-fitting bra even when your usual size is sold out.

How to Calculate Your Sister Size?

To find your sister size, you need to adjust the band size and the cup size. Here’s a simple guide:

 Go Up in the Band Size, Go Down in the Cup Size:

If you normally wear a 34C, your sister sizes would be 36B and 32D.

Go Down in the Band Size, Go Up in the Cup Size:

If you normally wear a 34C, your sister sizes would be 32D and 36B.

Essentially, for every band size you go up, you go down one cup size, and for every band size you go down, you go up one cup size.


Why Sister Sizes Work?

The reason sister sizes work is that the cup volume remains the same, while the band size changes to accommodate different body shapes and sizes. For example, the cup volume of a 34C is the same as that of a 36B and a 32D. This means that even if your usual size is unavailable, you can still achieve a comfortable and supportive fit by adjusting the band size.


Why you need to Know Your Sister Sizes

Knowing your sister sizes can help you significantly by expanding your options, especially when your preferred size is sold out. It can provide a better fit if you’re between band sizes or need a different band tightness, addressing the issue that sometimes even your regular size might not feel perfect. Understanding sister sizes also enhances versatility, allowing you to find a compatible size across various brands and styles that may fit differently. Most importantly, finding the right fit is crucial for comfort, and sister sizes can help you achieve a more customized and comfortable fit that feels better throughout the day.

How to Shop for Sister Sizes

When shopping online or in-store, use size charts provided by the brand. Many websites offer fitting tools or size calculators that include sister sizes. Here are some tips to help you shop effectively:

  1. Use Size Calculators: Many lingerie brands have size calculators on their websites that take sister sizes into account. Enter your current size to see the sister size recommendations.
  2. Consult Size Charts: Look at the detailed size charts provided by the brand. These charts often include measurements for both band and cup sizes, helping you identify the best sister size.
  3. Try Multiple Sizes: If you’re shopping in-store, bring multiple sizes to the fitting room. This allows you to try on your regular size and its sister sizes to see which fits best.
  4. Read Reviews: Customer reviews can provide insights into how a bra fits. Look for comments about whether the bra runs true to size, small, or large.
  5. Ask for Help: Don’t hesitate to ask a store associate for assistance. They can help you find the right size and provide recommendations based on your preferences.
  6. Check Return Policies: When shopping online, ensure the store has a good return policy. This way, you can return or exchange bras that don’t fit perfectly.

 Don't let the frustration of a sold-out size keep you from finding the perfect bra. Embrace the concept of sister sizes to expand your options and ensure a great fit. With a little knowledge and flexibility, you can always find a bra that offers the comfort, support, and style you love, even if your usual size isn’t available.



What is a sister size in bras?

 A sister size is an alternative bra size with the same cup volume but a different band size. For example, the sister sizes for a 34C are 32D and 36B.

How do I find my sister size?

 To find your sister size, go up one band size and down one cup size, or go down one band size and up one cup size. For instance, if you wear a 34C, your sister sizes are 32D and 36B.

Why should I consider sister sizes?

Considering sister sizes expands your options when your usual size is sold out, provides a better fit across different brands, and can improve overall comfort.

Can sister sizes fit better than my usual size?

 Yes, sometimes sister sizes can offer a better fit, especially if you're between sizes or need a different band tightness for comfort.

Do all brands use sister sizes?

 Most bra brands recognize sister sizes, but it's always best to check the specific brand’s size chart and fitting guidelines to ensure accuracy.