32A vs 34A Bra Size Differences

As an Amazon Associate we earn from qualifying purchases.

A well-fitting bra is essential for comfort. Given how frequently women complain about how uncomfortable their bras are, finding the correct bra size can be tough, especially if your bra size is unusual. You might be unsure if 32A vs 34A cup sizes are best for you and your measurements. This article distinguishes between these cup sizes.

32A vs 34A General Overview

Understanding the similarities and differences of both types of cup sizes with my 32A vs 34A comparison may assist you in finding the best cup size for your body and ensuring you have the proper bra for your wardrobe.

A white racerback underwire bra and green shorts are worn by a woman holding a purple mug

32A General Overview

A 32A cup size corresponds to a band measurement of 28-29 inches and a bust measurement of 32-33 inches. 32A is a tiny size, especially as A is the smallest of the usual cup sizes.

Graphic image of a woman wearing a pink top and black shorts that explains that a 32A bra size has a bust size of 32-33 inches and a band size of 31-32 inches

The 32-inch band is also on the small side. Because this is when females grow breast tissue, a 32A cup size is a regular for teenagers aged 12 to 15. Even older ladies, though, can stay at 32A.

34A General Overview

A 34A size bra measurement is not very large and is on the small side of average. The A cup is small, and a 34 band measurement is also smaller than average, so this is also small size.

Graphic image of a woman wearing a light blue top and black shorts explaining that a 34A bra size has a bust size of 34-35 inches and band size range of 33-34 inches

A 34A chest size corresponds to a 30-31-inch band measurement and a 34-35-inch bust measurement. 34A is on the lower end of the size spectrum, yet it is also one of the most common bra sizes.

Sister Sizes for A Cup

If the bra you desire isn’t available in a 32 A or 34A, you may always try on your sister sizes.

  • 30B and 34AA are the sister sizes for a 32A breast size.
  • A 34A bra size sister sizes are 32B and 36AA.

When employing sister sizing, you will move up a band size and down a bust size 36AA, or a band size and up a bust size 32B.

The 32A and 34A chest size is tiny but larger than the 28A and 30A.

Most people believe that if two cups are labeled with the same alphabet, they are the same size; however, that is not the case. The bust size grows in proportion to the band size. As a result, both 32A and 34A are larger than 28A and 30A, although smaller than 36A and 38A.

A woman wearing a green bra with underwire and black jogging pants standing in the kitchen

Though the band size is different, the cup density of these bra sizes is remarkably similar. A woman wearing these sizez has a larger body shape than a woman wearing 28A. 32 and 34A breasts may appear larger on a woman with a more petite body.

A 32 and 34A bust size may seem like a tiny hump. If you have a flat stomach or a slim lower body, your breasts may stick out more. However, if you have larger hips or a waistline, your breasts may appear substantially smaller.

Comparing 32A vs 34A

32A and 34A bra sizes have some similarities and also significant differences. They can sometimes be confusing, so understanding these features will help you determine your bust size.


There are numerous advantages to wearing 32A and 34A cup sizes, and the similarities between them can assist you in better understanding their function.

  • Size – 32A and 34A cups are on the smaller end of the bra size scale. Both sizes are typically worn by pre-teens and teenagers, though adult women do.
  • Appearance – the 32A and 34A cups appear small on the body, especially on broad-shouldered or broad torsos, because there is only a one-inch difference between the bust and band measurements.
  • Bra types – both cups are standard bra sizes, making it easier to find bras with various styles. With these two types of sizes, it is recommended to wear push-up bras with padding to give you a much more polished look and cleavage.


When comparing the differences between 32A and 34A bra sizes, you can better understand their respective strengths. You’ll know which one to wear this way.

  • Measurements – a 32A cup size corresponds to a band measurement of 28-29 inches and a bust measurement of 32-33 inches, while a 34A cup size corresponds to a 30-31-inch band measurement and a 34-35-inch bust measurement.
  • Size – the 34A bust size is tiny; however, it is larger than and 32A bust size, implying that it will accommodate a larger ribcage regardless of breast size.
  • Cup size – in terms of cup volume, an A cup on a 34 band has slightly more cup volume than an A cup on a 32 band. This is because the size of the cup is proportional to the band size.
  • Sister sizes –  30B and 34AA are the sister sizes for a 32A breast size, whereas a 34A cup size sister sizes are 32B and 36AA. A 32A and a 34A do not have the same breast volume. The 34A cup has the same volume as the 32B cup.
A white bandeau strapless bralette and black jogging pants are worn by a woman seated on the stairs

Major Distinguishing Factor

The major distinguishing factor between these two types of bras is that a 32A size corresponds to a band measurement of 28-29 inches and a bust measurement of 32-33 inches, while a 34A bra size corresponds to a 30-31-inch band measurement and a 34-35-inch bust measurement.

When to Use 32A

You can wear a 32A bra size if your band measurement is 28-29 inches and your bust measurement is 32-33 inches.

Deep V-neck tops and dresses are appropriate for women with 32A cups.

Shirts, dresses, and jackets that draw you in at the waist can also help you achieve an hourglass figure, giving the appearance of a larger boob size.

When to Use 34A

If you have a 30-31-inch band measurement and a 34-35-inch bust measurement, you can wear a 34A bra size.

If you are a 34A bust size, you can wear bras like t-shirt bras, bralettes, demi cup bras, plunge bras, and sports bras.

Which Cup Size Is Better?

There is no such thing as a perfect bra size. Both 32A and 34A cups are considered small.

However, they are incredibly versatile bra sizes due to the wide range of bra designs available for both these cups. Because they are smaller, they do not need as much support, and those who are A may even go braless if they like.

Clothing Options To Pick

When it comes to clothing options, you actually have a lot of choices:

Although a 32A may appear tiny, it is substantially larger than a 28B. Breasts differ from woman to woman, so a woman with a 32A chest size will not have the same breasts as another woman with the same size.

Other factors will influence how a 32A breast size appears on one woman versus another. Body shape is an important consideration.

For example, a woman with a pear-shaped body has quite large hips, so her 32A chest appears relatively tiny from the front. In this case, pick the right underwear and jeans for a pear shape.

In comparison, a woman with a flatter stomach and midriff will appear to have a larger chest, even if her bust size is the same.

Bra Size Measurement & Cup Size | A, B, C, D, DD Bra Sizes AND Extra Large Breasts

Final Verdict

It is critical to get yourself measured when purchasing a new bra. According to global studies, nearly 70% of women are estimated to be wearing an incorrect bra size. Consider sister sizing only if your exact bra size is unavailable.


Allena is the Founder and Editor of The Better Fit, a platform dedicated to empowering women with practical advice on bras and fitness, inspired by her own revelation of the widespread issue of incorrect bra sizing. Her expertise and tips have been recognized by major publications such as Cosmopolitan, Better Homes & Gardens, Insider, and NBC, making her a trusted voice in women's wellness and lifestyle.