Selects: How Bras Work

The history of the bra traces a fascinating evolution in women's garments, from ancient support solutions to the transformation brought by modern design and the eventual abandonment of corsets.

Early Breast Support Methods in Ancient and Medieval Times

Ancient Sicilian Women's Garments: Epidezmy and Strophium as Sports Bras

Ancient evidence of breast support comes from a Sicilian mosaic known as Bikini Girls, dating from around 400 to 300 BCE. It features young women engaged in athletics, wearing outfits resembling modern sports bras and short shorts. These garments were called an epidezmy in Greek or a strophium in Latin. They consisted of a cloth band wrapped around and knotted in the front, providing support during physical activity.

Medieval Texts Describe Breast Bags As Cloth Pouches in Dresses, Secured With Bands to Support Breasts During Daily Activities

In medieval Europe, physicians and medical writers described the use of "breast bags." Henri de Mondeville, a royal French surgeon in 1300, documented that women inserted two cloth bags into their dresses. These bags were fitted to the breasts and secured every morning with a band to hold them in place during daily life.

2008: Medieval Linen Bras Discovered Before Corsets

Around 100 years after 1300, broad technologies like breast bags faded as corsets became dominant. For centuries, historians believed there was a direct leap from breast bags to corsets. However, a 2008 discovery by archaeologist Beatrix Knutz at Austria's Langberg Castle revealed the existence of medieval linen bras, 600 to 700 years old. Their design resembled modern bras, proving such garments predated the corset and providing evidence of a transitional phase in breast support technology.

Transition From Corsets to Bras: Fundamental Shift in Support Philosophy

Corsets Were the Dominant Fashion From Medieval Times to the 19th Century, Elevating the Breasts While Compressing the Torso, Leading To Breathing and Digestive Issues

After the adoption of corsets, these garments remained the standard from the Middle Ages until the 19th century. The term corset comes from the Latin "corpus," meaning body. Corsets often had wood, bone, or later steel stays, shaping the torso and forcing the waist smaller while also flattening or elevating the breasts. Their tight fit was socially mandatory: not wearing a corset was seen as a sign of loose morals. Despite widespread dislike due to their restrictiveness and pain, corsets were essential for respectability, leading to breathing difficulties, digestive issues, and even permanent waist narrowing for some.

Modern Bra Design Enhances Support, Securing Breasts From Shoulders for Improved Comfort

A major problem with corsets was that they provided bottom-up support, pushing the bust upwards by compressing the torso. By contrast, bras revolutionized bust support by using over-the-shoulder straps, suspending and supporting the breasts from above, similar in concept to the medieval breast bags but more comfortable and healthier.

First Modern Bra Patent by Lumen Chapman in 1863 Featured Over-The-shoulder Design With Cups

The first patent for a modern bra was filed in 1863 by Lumen Chapman from Camden, New Jersey. His design featured an over-the-shoulder style, tightening at the back like a corset but made with stretch fabric and innovative "breast puffs" (early cups) for comfort and support. Despite filing the first patent, Chapman's design did not gain traction in the market at the time.

Mary Phelps Jacobs Launched the Commercial Bra

Mary Phelps Jacobs Crafted a Backless Brassiere For Her Debutante Ball Using Handkerchiefs and Ribbon

Mary Phelps Jacobs, a free-spirited and wealthy socialite, tired of the discomfort and visible boning of her corset under a sheer dress, instructed her maid to create an alternativ ...

Flapper and Post-War Fashion Introduced Competing Ideal Breast Shapes

In the 1920s, the flapper craze ushered in an androgynous silhouette. Brands like Boysh Form pioneered bras designed to flatten the breasts, creating the boyish look that was central to flapper style. These "breast-flattening" bras aimed to minimize curves for a slim, youthful appearance.

Following this trend, Maidenform was founded in 1929 by William and Ida Rosenthal to counteract the prevailing flapper aesthetic. Maidenform's philosophy was to celebrate the bust rather than hide it, and the company revolutionized bras by introducing cup sizing. This innovation encouraged women to accentuate their natural shape, setting a new standard and challenging the idea that women should conceal their bodies.

Hollywood's Golden Age Popularized Exaggerated, Pointed Breast Silhouettes

The influence of Hollywood in the 1940s and 1950s further shaped bra design. Stars like Jane Russell and Marilyn Monroe fueled the craze for a voluptuous, exaggerated shape. Designers responded with pointed "bullet bras" and "torpedo bras," which created a distinct, uplifted silhouette seen in period advertisements and on-screen.

During this era, Maidenform ran its iconic "I Dream" ad campaign from 1949 to 1963. The campaign featured women wearing only their Maidenform bras and skirts while engaging in activities like fighting fires or winning elections—jobs often considered unattainable for women at the time. While there was a sexualized element to the ads, the campaign, conceived by three women, also reflected progressive ideas by depicting women's ambitions and desires for roles beyond traditional expectations, even as it was shaped by the social and gender restrictions of the period.

1960s Counterculture, Twiggy Reject Structured Bras

The pendulum swung again in the 1960s. The rise of Twiggy, with her waifish figure and androgynous appeal, inspired many women to abandon bras altogether. Bra burning became a counterculture act and the era saw a rejection of the strict shaping garments from previous decades.

Designer Rudy Gernreich contributed to this shift by creating the "No-bra" in 1964. The No-bra offered subtle support and comfort, intentionally designed as the antithesis of the rigid bullet bras, allowing the natural shape to re-emerge. This minimalist approach mirrored the fashion world’s embrace of relaxed and unstructured silhouettes.

Wonder Bra's Return Focused On Enhancement, Created International Market Differences

The emphasis on enhancement returned with the invention of the Wonder Bra in Canada. Although it debuted in the 1960s, it didn’t become popular in the U.S. unt ...

Bra sizing and fitting present persistent challenges due to outdated methodologies and standardized approaches that fail to account for the wide diversity of women's bodies. The roots of this issue date back nearly a century and continue to shape the experiences of women shopping for bras today.

1929 Cup Sizing Standard Oversimplifies Anatomical Variations

Maidenform's 1929 Letter-Based Cup Sizing Relies on Overbust and Underbust Difference

In 1929, Maidenform introduced the letter-based cup sizing system, known as the cup system. This system relies on two core measurements: the overbust and underbust. The overbust is measured by wrapping a tape measure around the fullest part of the chest, across the nipples. The underbust is measured by encircling the chest directly beneath the breasts, at the rib cage. The difference between the overbust and underbust measurements determines the cup size, which is then categorized by a letter (such as A, B, C, or D). For example, a three-inch difference corresponds to a C cup.

Band and Cup Measurement Explained

The underbust measurement forms the band size—the number at the start of the bra size. For instance, a 34C bra means the rib cage measures 34 inches, and with a three-inch difference between the underbust and overbust, the wearer falls into a C cup. Theoretically, this method should account for most anatomical differences, but in practice, many women find it insufficient for a comfortable, supportive, and flattering fit.

Sister Sizing Offers Alternative Fit Options Poorly Communicated

Sister Sizing Shows Cup Volume Stays Constant Across Band Sizes, Allowing Better Fit By Adjusting Band Size

A crucial aspect of bra sizing is the principle of sister sizing, which shows that cup volume remains the same across specific combinations of band and cup sizes. For example, a 34C bra has a cup volume roughly equivalent to a 32D or a 36B. This flexibility theoretically allows women to achieve a better fit by adjusting the band size and shifting cup sizes accordingly.

American Women Unaware of Sister Sizing, Buy Ill-fitting Bras By Wrongly Linking Band and Cup Size Changes

Despite its utility, the concept of sister sizing is poorly communicated to American consumers. Many women wrongly believe that if the band feels too tight, they should increase both the band and the cup size (from 36C to 38C, for instance), not realizing that this changes the cup's volume. The lack of public awareness around sister sizing leads to widespread purchasing of incorrectly fitting bras and frustration around the bra-shopping experience.

American Manufacturing Prioritized Standardized Sizes Over Individual Fit

Bra Makers Marketed Limited Sizes As Universal Standards, Implying Women With Different Bodies Were Defective, Rather Than Acknowledging Manufacturing Constraints

American bra manufacturers historically mass-produced bras in a limited set of sizes for economic efficiency. Rather than acknowledge these production limitations, companies marketed their available sizes as universal standards, implying that bodies falling outside of these norms were somehow defective. This approach stigmatized those who did not fit off-the-rack bras.

80% of American Women Wear Improperly Fitting Bras; Statistic Lacks Scientific Basis

A statistic frequently cited claims that 80% of American women wear the wrong bra size. While this number is largely anecdotal and not grounded in scientific study, it persists as supposed evidence of a national fit problem, all pointing back to manufacturing inflexibility and communication failures rather than the failings of women's bodies.

Bra Fitting Models Standardized On one Woman's Measurements

In the 1970s, Manufacturers Used Fitting Models Like Dorothy Galligan, Working Long Hours to Test Bras and Provide Feedback On Fit and Comfort

By the 1970s, the industry relied on fitting models to standardize sizes. Dorothy Galligan, a singer from New York, was notable for serving as a long-term fitting model. She worked intensely, trying on thousands of bras and supplying feedback to manufacturers about their fit and comfort.

Dorothy Galligan's 34b Measurements Standardized Bra Industry, Excluding Other Sizes

Galligan’s measurements—specifically her 34B size—became the industry stan ...

Women's Liberation Links Bras to Patriarchy and Autonomy

In 1968, the Miss America pageant in Atlantic City became the site of a pivotal demonstration led by Carol Hanish, marking a significant event in the rise of second wave feminism. During this protest, women threw items such as false eyelashes, bras, and lingerie into a "freedom trash can," symbolizing their rejection of what they considered "shackles of the patriarchy." Although a widely believed legend emerged that feminists burned bras during the demonstration, this actually never happened. The myth originated from a reporter suggesting the women burn their discarded items as a nod to draft card burnings seen during antiwar protests. Despite no items being set alight, the story of bra burning became embedded in public consciousness.

1977 Sports Bra Boosted Women's Athletic Participation

The sports bra, or "Jog Bra," was invented in 1977 by two women who ingeniously combined two jockstraps. This simple yet revolutionary invention greatly improved breast support, making it possible for more women to comfortably participate in athletics. Its creation closely followed the passing of Title IX, which expanded educational and athletic opportunities for women. While Title IX was essential to opening doors, the invention of the sports bra made practical participation in sports attainable, ultimately revolutionizing women's involvement in athletics.

Bra-wearing: A Socially Enforced Expectation Despite Shifting Attitudes

Despite changing attitudes about personal comfort and choice, social expectations around bra-wearing remain strong. Women who forgo bras in professional or formal settings risk social judgment and even professional consequences, as workplace dress codes and cultural norms still hold sway. Training bras serve as an early marker of maturity for girls, providing security and a sense of conformity with peers, even when not physically ...

The bra industry stands out for its complex manufacturing process, the multifaceted demands bras must meet, and the significant yet underappreciated contributions of women. In recent decades, major brands like Victoria’s Secret have shaped the market, but shifting consumer attitudes are challenging their dominance.

Bra Production Complexity Exceeds Most Garment Categories

Every year, around 600 million bras are produced globally, and there are about 26,000 different bra patterns, far exceeding the 20 main style categories (such as racerback or demi-cup). Each individual bra design typically involves 40 separate components—straps, clasps, underwires, and reinforcing structures—demonstrating the garment’s intricate engineering. Creating a new bra takes months of collaboration among designers, pattern makers, engineers, and manufacturers. This collective effort and technical specificity reflect both the garment’s engineering challenge and economic incentives; the sports bra segment alone generates roughly $7 billion in annual revenue, underscoring the market’s value and innovation incentives.

Bras Must Satisfy Multiple Functional and Aesthetic Requirements

Bras are expected to do far more than simply fit a wide variety of bodies. They must adapt to changes in a wearer’s body due to hormonal shifts and life stage, all while providing flexible support for physical movement without causing chafing, binding, or unwanted shifting. Durability is essential; bras must maintain their shape and structural integrity through many cycles of wear and laundering. They also need to avoid damaging outer garments, remain generally invisible beneath clothing, and harmonize with the desired silhouette of the wearer. Price accessibility is critical—bras must be attractive to a vast consumer base. Reflecting their importance and variability, the average American woman owns six bras and has a choice among 20 officially recognized bra styles.

Women's Central but Underrecognized Role in Bra Design

Despite some perceptions, the bra industry in the United States was never exclusively male-dominated. Between 1863 and 1969, over 1,200 U.S. patents were issued for bras—about half held by women. Women have consistently occupied crucial roles in the industry, including as designers, managers, specialists, and product managers, shaping both the technical and commercial evolution of the bra. This history distinguishes the bra industry as ...