Is 36D the same as 34D?

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Many people find themselves asking the question, “Is 36D the same as 34D?” when shopping for bras or lingerie. While the cup size may seem like a straightforward measurement, there are actually many factors that can affect how a bra fits and feels. In this blog post, we will explore the differences between 36D and 34D, and provide a detailed answer to this commonly asked question.

Is 36D the same as 34D?

Understanding Bra Sizes

Before diving into the differences between 36D and 34D, it’s important to first understand how bra sizes are determined. Bra sizes consist of two measurements: the band size and the cup size. The band size is the measurement around the ribcage, just below the bust, and the cup size is the measurement of the fullest part of the bust.

Band sizes typically range from 28 to 48, and cup sizes range from AA to O. The cup size is determined by subtracting the band size from the bust measurement. For example, if the band size is 36 inches and the bust measurement is 40 inches, the cup size would be a D.

Differences Between 36D and 34D

Now that we have a basic understanding of how bra sizes are determined, let’s explore the differences between 36D and 34D. The first difference is in the band size. A 36D bra has a band size of 36 inches, while a 34D bra has a band size of 34 inches. This means that a 34D bra will have a tighter band than a 36D bra, as it is designed to fit a smaller ribcage.

The second difference is in the cup size. While both bras have a D cup size, the actual volume of the cup is different. Cup sizes are not standardized across all band sizes, so a D cup on a 34 band bra will be smaller than a D cup on a 36 band bra. This is because the band size affects the proportion of the cup to the body.

Factors That Affect Bra Fit

While band and cup size are important factors in determining the fit of a bra, there are other factors that can affect how a bra feels and fits. One of these factors is the shape of the breasts. Every woman’s breasts are unique, and some may be fuller at the top, bottom, or sides. This can affect how a bra fits, even if it is the correct band and cup size.

Another factor is the style of the bra. Different styles, such as push-up bras or balconette bras, may fit differently even if they are the same size. This is because different styles are designed to lift or shape the breasts in different ways.

How to Determine Your Bra Size?

Now that we’ve explored the differences between 36D and 34D, you may be wondering how to determine your own bra size. The best way to do this is to measure yourself at home. To determine your band size, measure around your ribcage just below your bust. To determine your bust measurement, measure around the fullest part of your bust. Subtract your band size from your bust measurement, and consult a bra size chart to determine your cup size.

It’s important to note that bra sizes can vary between brands and styles, so it’s always a good idea to try on bras before purchasing them. If you’re unsure of your size, many lingerie stores offer bra fitting services to help you find the perfect fit.

Common Bra Fit Issues

Even if you know your correct bra size, you may still experience some common bra fit issues. One common issue is straps that dig into the shoulders. This can be caused by an ill-fitting band size, which can cause the straps to bear too much weight.

Another issue is underwire that digs into the breast tissue. This can be caused by an incorrect cup size or shape, or by an underwire that is too narrow or too wide.

Additionally, some women may experience “spillage” or “gapping” in the cups. Spillage occurs when the breasts spill out of the top or sides of the cups, while gapping occurs when there is extra space between the cups and the breast tissue. These issues can be caused by an incorrect cup size, or by a style that is not suited to your breast shape.

Finding the Right Bra for You

Finding the right bra can be a frustrating and time-consuming process, but it’s worth it for the comfort and confidence that a well-fitting bra can provide. When shopping for bras, it’s important to try on a variety of sizes and styles to find what works best for you.

Start by trying on your measured size, but don’t be afraid to try a size up or down if the fit doesn’t feel quite right. Pay attention to how the band feels around your ribcage – it should be snug, but not so tight that it’s uncomfortable. The cups should fully contain your breast tissue, without any spillage or gapping.

Consider trying on different styles to find what works best for your breast shape and personal preferences. And don’t forget to adjust the straps – they should be snug but not digging in, and they should be adjusted evenly on both sides.


In conclusion, while 36D and 34D may both have the same cup size, there are differences in band size and cup volume that can affect the fit and feel of a bra. Understanding your own breast shape and finding the right size and style can help you find a bra that fits comfortably and provides the support and confidence you need. So don’t be afraid to experiment and try different sizes and styles – with a little patience and persistence, you’ll find the perfect fit.

Is 36D the same as 34D?
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