Let's talk about something that has the power to make or break a woman's day: bras. We all know the struggle to find the perfect fit-a bra that feels like it was made just for us, providing support, comfort, and that extra boost of confidence. But how do we actually measure our bra size to make sure we're wearing the right one? If you already know your band and bust sizes, try our bra size calculator – but don't forget about bra sister sizes! If you want to check your bust measurements, we'll show you the best way to do it!

Sports Bras and Bralettes

Please keep in mind that some Sports Bras and Bralettes use classic appareal sizes like Small, Large or X-Large. If they don't come with a number and a letter for band size and cup size, you can choose your t-shirt size in general. For more information, please take a look at our "Bralette vs Sports Bra" guide!

Why it's important to wear the right bra size

Wearing the right bra size is not only about comfort and aesthetics, it also has a significant impact on your overall health and well-being. Many women underestimate the importance of wearing a bra that fits properly, but the truth is that an ill-fitting bra can lead to a variety of problems.

First and foremost, wearing the wrong bra size can cause discomfort, pain and even long-term damage to your breasts. If your bra doesn't provide enough support, or if the band is too tight or too loose, it can put unnecessary pressure on your breasts and strain the ligaments that support them. Over time, this can lead to sagging, back pain, and even damage to the breast tissue.

In addition, an ill-fitting bra can affect your posture and silhouette. A properly fitted bra will lift and support your breasts in a way that enhances your natural shape and promotes good posture. On the other hand, an ill-fitting bra can make your breasts look saggy or uneven, which can affect your confidence and how you feel in certain outfits.

Wearing the right size bra can also improve your overall comfort throughout the day. When you're wearing a bra that fits properly, you won't have to constantly adjust or readjust it. You won't have straps digging into your shoulders or underwire digging into your ribs. Instead, you can focus on the task at hand without being distracted by discomfort.

Understanding your bra size is the first step to finding the perfect fit. Bra size is determined by two measurements: band size and cup size. The band size is the measurement around the chest, and the cup size is the difference between the band size and the fullest part of the bust. It's important to remember that the cup size is relative to the band size, so a 34C is not the same as a 38C.

In this article, we will discuss how to accurately measure bra size, how to find a bra that fits, and answer some frequently asked questions about bra sizing. By the end of this article, readers will have a better understanding of bra sizing and be able to find a bra that fits comfortably and confidently.

Determining the correct bra size can be a daunting task, but it is essential for both comfort and support. A bra that fits correctly can prevent back pain and improve posture. The two primary measurements used to determine a bra size are the band size and the cup size.

Band Size

The band size is the foundation of the bra, providing most of the
support. It's the number in the bra size (e.g., 32 in 32B). It's measured around the chest, just under the breasts. To measure the band size, use a measuring tape and wrap it around the chest, making sure it is snug but not too tight. Round the measurement to the nearest even number. This measurement will correspond to the band size.

Cup Size

The cup size represents the volume of the breast and is
denoted by letters (e.g., B in 32B). It is determined by measuring across the fullest part of the breast, while wearing a bra. Subtract the band size from this measurement to determine the cup size. The difference between the two measurements will correspond to a letter of the alphabet, which represents the cup size. It is important to note that cup size is not a static measurement. It can vary depending on the bra style and brand. For example, a person who wears a 34B in one brand may need a 36A or a 32C in another brand.

Bust Size vs. Boob Size

Although they are often used interchangeably, they are different. Bust size is the measurement around the fullest part of the chest, while your breast size or boob size is the volume of breast tissue.

It is also important to consider the shape of the breasts when determining the correct bra size. Different styles of bras are designed to accommodate different breast shapes, such as full or shallow breasts. It may take some trial and error to find the perfect bra style and size.

To measure your bra size accurately, you'll need
a few essential items. Here's what you should have on hand before you begin:

1. A flexible measuring tape: To get the most accurate measurements, it's best to use a soft, flexible measuring tape. This will allow you to easily wrap it around your body without any discomfort or pulling.
2. A mirror: Having a mirror nearby can be helpful when taking your measurements. It allows you to ensure that the tape is level and positioned correctly, giving you the most accurate results.
3. A well-fitting bra: While this may seem counterintuitive, wearing a well-fitting bra during the measuring process can actually help. It ensures that your breasts are properly supported and positioned, allowing for more accurate measurements.

By having these items ready, you'll be able to measure your bra size with confidence and accuracy. Remember, finding the right fit is essential for comfort and support, so take the time to gather these tools before getting started.

Finding the perfect fit for your bra starts with knowing your band size. To measure your band size accurately, follow these steps:

1. Take a measuring tape and wrap it snugly around your ribcage, just below your bust.
2. Ensure that the measuring tape is parallel to the floor and not slanted.
3. Take note of the measurement in inches or centimeters, whichever you prefer.

Once you have measured your band size, it's important to keep in mind that bra sizes can vary across different brands and styles. A general rule of thumb is to round up to the nearest even number if you get an odd measurement. For example, if your band measurement is 31 inches, rounding up would give you a band size of 32.

Remember, finding the right bra size is all about comfort and support. It's worth trying on different sizes and styles to find the one that fits you best.

Finding a bra that fits perfectly is essential for comfort and support. To determine your cup size, you'll need to measure your bust. Here's how:

1. Start by wearing an unpadded bra and standing in front of a mirror.
2. Wrap a tape measure around your back, just below your bust. Make sure the tape is snug, but not too tight.
3. Note the measurement in inches. If it's an odd number, round up to the next even number.
4. Next, measure around the fullest part of your bust. Again, make sure the tape is snug but not too tight.
5. Record this measurement as well.

To find your cup size, subtract the underbust measurement from the bust measurement. Each inch represents one cup size. For example:

• If the difference is 1 inch, you're an A cup.
• If the difference is 2 inches, you're a B cup.
• If the difference is 3 inches, you're a C cup - and so on.

To find your fitting cup size, subtract the underbust measurement from the bust measurement. Each inch represents a cup size. With a difference of 1 inch, you're an A cup. A difference of 2 inches would be a B cup.

The cup size of your breasts is directly related to your measured band size: it reflects the difference between the size of your breasts (band size) and the size of your bust (bust size). This difference is used to calculate your cup size. If you decrease your band size, you'll need to increase your cup size to maintain the same volume (this is called "sister sizes").

After taking your band and cup measurements, it's time to calculate your bra size. Remember, the band size is the measurement around your chest just below your bust, and the cup size is the difference between your bust measurement and your band measurement. To calculate your bra size, follow these simple steps or use our bra size calculator:

1. Subtract your band measurement from your bust measurement. The difference will determine your cup size. For example, if your band measurement is 34 inches and your bust measurement is 38 inches, the difference is 4 inches.
2. Use the following chart to determine your cup size based on the difference:
   0 inches: AA cup, 1 inch: A cup, 2 inches: B cup and 3 inches: C cup.
3. Combine your band size with your cup size to get your final bra size. Using the previous example, if your band measurement is 34 inches and your cup size is D, your bra size would be 34D.

Remember that bra sizing can vary between brands, so it's always a good idea to try on different sizes to find the perfect fit. Additionally, your bra size may change over time due to factors such as weight loss or gain, pregnancy, or hormonal changes. Regularly measuring yourself and adjusting your bra size accordingly will ensure you always have the most comfortable and supportive fit.

The Evolution of Bra Sizing

Bra sizing has evolved over the decades. In the early 20th century, bras were sized by the bust measurement alone. It wasn't until the 1930s that cup sizes were introduced, and the modern method of bra sizing, which combines band and cup measurements, was developed. This evolution reflects the lingerie industry's understanding of women's bodies and the need for bras that offer both comfort and support.

The Global Perspective on Bra Sizing

Bra sizing isn't universal. If you've ever shopped for bras internationally, you might've noticed discrepancies in sizing. For instance, a UK size 34D might not be the same as a US size 34D. It's essential to be aware of these differences, especially if you're shopping from international brands. Always refer to the brand's sizing chart or use conversion tools to ensure you're getting the right size.

Bra sizing can sometimes be a bit perplexing, especially when you come across the concept of "sister sizes". In the world of bras, sister sizes refer to different bra size combinations that have the same breast volume or cup capacity, even though the band size and cup size might be different. For instance, a 34C has the same cup volume as a 32D and a 36B. This means if your regular size feels a bit off in the band but perfect in the cup, you can try a sister size that might offer a better fit. It's a handy trick to know, especially when shopping for brands that might size their bras slightly differently.

However, it's important to remember that while sister sizes may have the same cup volume, the fit may feel different due to the difference in band size. Even if a 36A and a 28DD have the same cup size, the 8" smaller band size will likely make the bra feel very uncomfortable - if it fits at all.

The idea behind sister sizes is simple: If you increase the band size of your bra (always add two inches, e.g. from 34 to 36), you must decrease the cup size by one letter to maintain the same volume. Conversely, if you decrease the band size, you will need to increase the cup size to maintain the same volume.

A bra isn't just a bra: There are many different types available. Each bra type is distinct, catering to different needs, occasions, and preferences. Whether for fashion, function, or both, there's a bra design tailored for every individual's unique requirements.

Bralette: A bralette is a lightweight and wire-free alternative to traditional bras – more about bralettes. It often emphasizes comfort and a natural shape, made with soft materials like lace or cotton. Bralettes are versatile, suitable for everyday wear or as a fashion statement when layered under low-cut tops or sheer clothing. They typically lack the structured support of underwired bras, making them a favorite choice for those who prioritize comfort.

Swim Bra: Specifically designed for swimwear, a swim bra provides support while being water-resistant. Made from materials that can withstand chlorine and saltwater, swim bras are built to retain their shape and offer breast support while swimming. They often come with features like quick-drying fabric and adjustable straps, ensuring a snug fit even in wet conditions.

Strapless Bra: As the name suggests, strapless bras are designed without shoulder straps, ideal for wearing under off-shoulder or strapless outfits. They rely on a strong, supportive band around the ribcage to stay in place and often come with silicone or rubber lining to prevent slipping. The cups are usually molded to retain shape even without the support of straps.

Underwire Bra: Underwire bras are designed with a thin, semi-circular wire embedded below the cup. This wire provides additional support and lift, helping to contour and shape the breasts. They are suitable for individuals with larger busts or those seeking a defined shape. The underwire ensures that the bra maintains its structure throughout the day.

Bullet Bra: Iconic to the 1950s fashion, the bullet bra is characterized by its conical or torpedo-shaped cups. It gives the breasts a sharply pointed appearance. While not as popular in contemporary fashion, they remain a symbol of vintage style and are often worn for retro-themed events or by enthusiasts of classic fashion.

Balconette Bra: The balconette bra, also known as a shelf bra, offers a horizontal cut, creating a balcony-like effect for the breasts. It lifts the breasts to enhance their appearance and create fullness on the top half of the bust. With wide-set straps, they're perfect for low-cut necklines, offering support without being visible.

Triangle Bra: Triangle bras are named for the triangular shape of their cups. Typically wire-free, they offer a natural fit and are often made of soft materials. They provide minimal coverage and are ideal for those with smaller busts or those seeking a relaxed, natural look.

Soft Cup Bra: Soft cup bras prioritize comfort, designed without any underwire. They rely on the strength of the fabric and the design's engineering to provide support. Suitable for all bust sizes, they offer a more natural silhouette and are often chosen for daily wear.

Plunge Bra: Plunge bras are designed with a deep V-neckline and angled cups that push the breasts together. This design enhances cleavage, making it ideal for low-cut tops or dresses. The centered gore allows for a close fit, ensuring the breasts remain positioned even in deep necklines.

Push Up Bra: Push-up bras are designed to lift and push the breasts together, enhancing cleavage. They come with padding, often made of foam or gel, at the bottom or sides of the cups. They're perfect for those seeking to accentuate their bust or for outfits that benefit from an enhanced silhouette.

Corset Bra: A fusion of a bra and a corset, this type offers both bust support and waist cinching. It extends down to the waist or hips and often comes with boning to shape and contour the torso. Corset bras are often chosen for special occasions, bridal wear, or outfits that require a streamlined silhouette.

Sport Bra: Specifically designed for physical activity, sports bras provide support and reduce breast movement during exercise. They're made of breathable, stretchy materials that wick away moisture. With designs ranging from low to high impact, they ensure that individuals can engage in activities, from yoga to running, with maximum comfort and minimum bounce.

When it comes to finding the perfect bra fit, many women make common mistakes that can lead to discomfort and inadequate support. Avoiding these mistakes is crucial for achieving optimal comfort and confidence. Here are some common bra size mistakes and how to avoid them:

1. Wearing the Wrong Band Size: One of the most common mistakes is wearing a band size that is too big. The band of your bra provides the majority of the support, so it's crucial to get the right size. A loose band can result in poor support and a lack of lift. To avoid this, make sure to measure your underbust accurately and choose a band size that fits snugly, but not too tight.
2. Choosing the Wrong Cup Size: Another mistake is selecting a cup size that is too small or too big. This can lead to spillage, bulging, or an unflattering shape. To determine the correct cup size, measure your bust at the fullest part and subtract your underbust measurement. Use a bra size chart or consult with a professional fitter to find the right cup size for you.
3. Ignoring Breast Shape: Every woman has a unique breast shape, and different bra styles cater to different shapes. Ignoring your breast shape can result in discomfort and an ill-fitting bra. Take the time to understand your breast shape and choose bras that are designed to enhance and support your specific shape.
4. Neglecting to Adjust Straps: Many women forget to adjust their bra straps, leading to straps that dig into the shoulders or slip off. Make sure to adjust the straps so that they provide adequate support without digging in or sliding off. The straps should be snug but not too tight, and they should sit comfortably on your shoulders.
5. Not trying on different styles: Not all bras are created equal, and what works for one person may not work for another. It's important to try different styles, such as balconette, plunge or sports bras, to see which ones provide the best support and comfort for your unique shape and lifestyle.
6. Not measuring regularly or relying on outdated measurements: Your bra size can change over time due to weight fluctuations, pregnancy, or aging. It's
   important to measure yourself regularly, at least once a year, to ensure you're
   wearing the correct size.

By avoiding these common bra size mistakes, you can ensure that you find a bra that fits perfectly and provides the support and comfort you deserve. Remember to measure yourself regularly, as bra size can change over time due to factors such as weight fluctuations and hormonal changes.

Finding the perfect fitting bra can be a challenge, but with the right tips and techniques, you can achieve the perfect fit and feel comfortable and confident all day long.

Know Your Shape

Understanding your breast shape is key to finding a bra that fits well and provides the right support. There are different breast shapes including round, teardrop, asymmetric, and bell-shaped. Knowing your shape can help you choose the right style and type of bra that flatters your figure.

Try Different Styles

Not all bra styles are created equal, and what works for one person may not work for another. It's important to try different styles of bras to find the one that suits your shape and provides the most comfort and support. Some popular styles include balconette, push-up, plunge, and wireless bras. Don't be afraid to experiment and find what works best for you.

Check the Fit

When trying on bras, there are a few key areas to check for the perfect fit. The band should fit snugly around your ribcage and should not ride up or dig into your skin. The straps should be adjusted so they provide support without digging into your shoulders. The cups should fully enclose your breasts without any spillage or gaps. Take the time to adjust the straps and band to ensure a comfortable and secure fit.

Trust Your Comfort

Ultimately, the most important factor in finding the perfect bra is your comfort. If a bra feels uncomfortable, it's not the right fit for you, no matter how pretty or stylish it may be. Trust your instincts and choose a bra that makes you feel comfortable and confident.

Many women struggle with finding the perfect fitting bra, but with the right knowledge and measurements, it can be much easier than you think. Here are some frequently asked questions about bra sizing to help you on your quest for comfort and support:

How often should I measure my bra size?

It is recommended that you measure your bra size at least once a year to ensure that you continue to wear a perfectly fitting bra with the right level of comfort and support. Factors such as weight loss, weight gain, pregnancy and breastfeeding can all affect your breast size and shape.

How do I measure my band size?

To measure your band size, wrap a measuring tape snugly around your ribcage, just below your bust. Make sure the tape is parallel to the floor and not too tight or too loose. Round up to the nearest whole number to determine your band size.

How do I measure my cup size?

To measure your cup size, wrap the measuring tape around the fullest part of your bust. Make sure the tape is parallel to the floor and not too tight or too loose. Subtract your band size measurement from your bust measurement to find your cup size. Each inch represents a different cup size (e.g., 1 inch is an A cup, 2 inches is a B cup, and so on).

What should I do if my measurements fall between two sizes?

If your measurements fall between two sizes, it is generally recommended that you take the larger size. This will ensure a more comfortable fit and prevent any potential discomfort or digging into your skin. If you feel you need extra support, you can also try a "sister size" of your actual bra size.

What are bra sister sizes?

Bra sister sizes refer to different bra size combinations that maintain the same breast volume or cup capacity. This means that although the band and cup sizes are different, the actual cup volume remains the same. For example, sizes 34C, 32D and 36B are all sister sizes and have the same cup volume, but with different band sizes. Trying sister bra sizes can be beneficial if you're between sizes or want to try brands that have slightly different sizing standards.

The history of bras, garments specifically designed to support women's breasts, has ancient roots. In ancient Greece, women utilized a band of wool or linen, known as an apodesme, to wrap around their breasts. Meanwhile, in the Roman Empire, a similar cloth band, termed a strophium or mamillare, served the same purpose.

However, the transition to the contemporary bra began in the early 20th century. Mary Phelps Jacob, a New York socialite, is often credited with pioneering the modern bra in 1914. Frustrated with the constricting corsets of her era, she ingeniously crafted a bra using two silk handkerchiefs and some ribbon. While rudimentary compared to today's designs, this innovation signaled a transformative moment in the evolution of women's undergarments.

The word "bra" is derived from "brassiere," a French term initially meaning a child's undershirt. Vogue magazine popularized "brassiere" in 1907 to denote women's undergarments, and by 1911, it was officially listed in the Oxford English Dictionary. The term was eventually abbreviated to "bra" in the 1930s. Presently, "bra" encompasses a diverse range of styles, such as push-up, strapless, bandeau, demicup, sports, minimiser, padded, T-shirt, multiway, plunge, wireless, maternity, seamless, silicone, and stick-on bras, to name a few.

The sports bra, designed to offer enhanced support during physical activities, was a later invention. The inaugural sports bra, named the "Jogbra," was introduced in 1977 by Lisa Lindahl, Polly Smith, and Hinda Miller. Their prototype was ingeniously crafted by stitching two jockstraps together. This invention revolutionized women's athletics, granting women the comfort and support necessary for high-impact activities.

Another invention, the bralette, became popular in the 21st century as women started seeking more comfortable alternatives to traditional bras. The bralette's design, which often features soft, stretchy fabrics without underwires and heavy padding, is a testament to this shift towards comfort and natural body shapes.