Everything Know About 34b Bra Size

On average, women wear a 34B bra size. What does that mean for you? Well, if you are a woman and wear a 34B bra size, it means your breasts are on the smaller side. In fact, most women who wear a 34B bra size fall within the range of A to D cup. If you are not sure what your bra size is, take our quiz to find out. And if you’re looking for a new bra, be sure to check out our selection of bras in different sizes. We have bras for all shapes and sizes!

What is a 34B bra size?

A 34B bra size is equivalent to a UK size 36. It is the smallest bust size that constitutes a full band size in British sizing. The band of a 34B should fit around the ribcage just below the breasts, with enough room to breathe and move.

34B bras are not always available in all stores, but they are becoming more popular as sizes smaller and smaller become more popular. Brands that carry this size range include Freya, Fantasie, Panache, Curvy Kate, Comexim and Elomi.

Types of bras

There are multiple types of bras, each with its own function.

  • Underwire bras: These bras support breasts by using metal wires underneath the fabric. They are often worn for maximum support, but can also be sexier under clothes.
  • Cotton/polyester bras: These are typically less supportive than underwire bras, and are meant to feel more comfortable. They’re also good for daytime wear.
  • Mesh Bras: These bras have holes in the fabric that allow your skin to breathe. They’re perfect if you’re looking for a comfortable and stylish option.
  • Silicone Bra inserts: If you’re looking for a more natural-looking bra, silicone bra inserts may be the right option for you. They come in a variety of shapes and sizes, and can provide better support than traditional bras.


What to do if you are a 34B and your bra does not fit?

If you are a 34B and your bra does not fit, there are a few things you can do. First, try going up a band size. This may give you more room in the cup. If that is not enough, consider buying a bra with more support. Another option is to shop for bras that have stretchy fabric in the cups. This will help to give you more coverage and support.


How to measure for a 34B bra?

  • Step One: Find the fullest part of your bust. Bring your arms up to shoulder height and measure around the fullest part of your bust, making sure to keep the tape straight.
  • Step Two: Determine your band size. Your band size is based on the circumference of your bust at its widest point. To find your band size, wrap a piece of measuring tape around your bust at its widest point and divide the number by 2. For example, if you measure 36 inches around your bust and your band size is 30 inches, then you would wear a 36 inch band shirt. Note that some brands offer different sizes in inches and centimeters, so be sure to check before purchasing!
  • Step Three: Determine cup size. Cup size is based on the diameter of your breast at its widest point (usually measured in millimeters). To find cup size, measure around the fullest part of your breast with a soft measuring tape (or use a ruler if you have an accurate measurement). Make sure that the tape is held flat against the skin – if it’s curved, it may be inaccurate. Cup sizes can vary slightly from brand to brand, but range from A (32 mm) to D (36 mm). In general, larger cup sizes will require a larger band size and vice versa; therefore, always consult the sizing chart provided with your bra!


How to buy a 34B bra?

When it comes to buying a bra, many women are unsure of their size. According to The Bra Fitting Room, the average woman wears a 34B. So if you’re in that range, here’s how to buy the right one:

First, find your band size. This is the size of the band on your bra which fits snugly around your chest and usually falls just below your breasts. If you don’t have a band size yet, measure around the fullest part of your bust (underneath your arms) and use that number as your band size.

Next, find your cup size. This is the size of the cups of your bra which will fit on top of your breasts. To do this, take a measuring tape and wrap it around yourself at the fullest part of your bust (underneath your arms). Measurements should be in inches. If you don’t have a cup size yet, estimate by taking into account how wide open each cup is on most bras and use that number as your cup size.

Now compare those two numbers to find your correct bra fit! A good rule of thumb is to go up one backband and down one cup size if you are between sizes or if you are in between band sizes or cup sizes. For example, if you are a 34B but want a 36D for more support, go up one backband from 34 to 35 and down one cup from B to A.


If you’re ever unsure of what size bra to buy, or if your current bras seem to be slowly slipping off your shoulders, it’s time to take a closer look at the back labels. The following are the 34b bust sizes and what they correspond to in terms of cup size: Bust Size (Inches) Cup Size 32-34 A 32B 36-38 B 36C 40 C 40D 42 D 42DD