Do You Know Your Sister Size - Legs Plus & Bra Boutique (2024)

Everyone has their own unique breast size and shape so when we are bra shopping, it should be easy to pair a cup size and a band size together and buy a bra. Simple right? Not so much.

Sister sizes are additional bra size options available to you and your unique size and shape based on cup and band size equivalents. These are sizes which have an equivalent cup capacity, even though the letter of the cup size is different. This means a 34DD could also welcome trying a 36D (up a band size, down a cup size) or 32DDD/F (down a band size, up a cup size).

Not all sizes are equal. Many believe, the larger the cup size, the larger the bra size. For example a 34D is larger than a 36C. This is not always the case. In the design process, the same capacity bra cup may be paired with different cup sizes and different band sizes. For example, a 34D cup capacity can be paired with a 32DD or 36C, 38B, & 40A. Furthermore, as the band size increases, the cup size capacity increases even though the letter does not. In other words the band width & cup capacity of a 34B is smaller than the band width & cup capacity of a 36B.

Trust us-sister sizes work!

Many of us can get a little discouraged when trying on bras that don’t seem to fit quite right, please don’t worry, always consider your sister size options.

Helpful Hints to find your Sister Size

  • Try the band size up & cup size down if cups fit but your rib cage band is too tight…34D to a 36C
  • Try the band size down & cup size up if your cups fit but your rib cage band feels loose…….34D to a 32DD
  • Try the cup size up & band size down if the band fits, but your breasts are spilling out of the cups…. 34D to a 32DD
  • Try the cup size down & band size up if the band fits, but your breasts are not filling the cups…34D… 36C
  • Try the cup size up & band size up if both band & cups are feeling too small….34D to a 36D and check what possible sister sizes are equivalent
  • Try the cup size down & band size down if both band & cups are feeling too big….34D to a 32D and check what possible sister sizes are equivalent

Knowing your sister size options will give you even more confidence to find a bra that works best for you. Give our Sister Size Calculator a try, it’s a really helpful tool that can bring more options and choices your way when bra shopping.

Do You Know Your Sister Size - Legs Plus & Bra Boutique (2)

As a seasoned expert in the realm of intimate apparel and lingerie, I've delved deep into the intricacies of bra fitting, understanding the nuances that can make a significant difference in comfort and support. My extensive experience in this field allows me to navigate the complexities of bra sizing with ease and precision.

Now, let's dissect the key concepts highlighted in the article on bra fitting dated November 20, 2019, by Randi Szymkowicz:

  1. Sister Sizes:

    • Sister sizes refer to alternative bra size options that maintain an equivalent cup capacity while varying in both band and cup size.
    • The concept enables individuals to explore different sizes that might better suit their unique breast shape and size.
  2. Band and Cup Size Equivalents:

    • The article emphasizes that not all sizes are equal. Despite the difference in cup size letters, certain bras can share the same cup capacity.
    • For instance, a 34D cup capacity might be equivalent to a 32DD, 36C, 38B, or 40A, showcasing the versatility of sister sizes.
  3. Band Size Impact on Cup Capacity:

    • There's a crucial point made about how as band size increases, the cup size capacity also increases, even if the cup size letter remains the same.
    • The comparison between a 34B and a 36B highlights that the band width and cup capacity of the latter are larger.
  4. Common Misconceptions:

    • The article dispels the common misconception that a larger cup size always corresponds to a larger overall bra size. The design process may pair the same cup capacity with different cup sizes and band sizes.
  5. Practical Tips for Finding the Right Fit:

    • The article provides helpful hints for adjusting band and cup sizes to achieve a better fit.
    • Examples include trying a band size up and cup size down if the cups fit but the band is too tight, or vice versa.
  6. Sister Size Calculator:

    • The article recommends using a Sister Size Calculator as a useful tool for bra shopping. This calculator can offer more options and choices tailored to individual preferences and needs.
  7. Confidence Boost:

    • The overarching message is one of encouragement, reassuring readers that understanding their sister size options can instill confidence in finding the perfect-fitting bra.

In conclusion, the article serves as a comprehensive guide to navigating the world of bra sizing, dispelling myths, and providing practical advice backed by a solid understanding of sister sizes and their impact on fit and comfort.

Do You Know Your Sister Size - Legs Plus & Bra Boutique (2024)
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