3 November (1914): Two handkerchiefs and a pink ribbon

Adam: The everyday bra hanging in millions of closets today traces back to an emergency wardrobe repair before a society dance, locked into law on November 3, 1914.

Daphne: Up until then, an American or European woman dressing for dinner stepped into armor. The standard corset was a heavy cage of canvas or silk, stiffened from hips to armpits with strips of tempered steel or whalebone—the flexible, horn-like plates from the upper jaws of whales. It pressed the ribcage into an hourglass and shoved the bosom upward into one immovable shelf.

Adam: In the winter of 1910, a nineteen-year-old New York socialite named Mary Phelps Jacob was getting dressed for a debutante ball. She had bought a sheer, low-cut evening gown of pale silk. But in her bedroom mirror, the dress looked absurd. The rigid top of her corset kept poking out above the neckline, and the thick boning showed straight through the sheer fabric. It ruined the drape entirely. So she called in her maid, Marie, and asked for two white silk pocket handkerchiefs, some pink baby ribbon, and a needle and thread.

Daphne: It was pure triage. They folded the handkerchiefs diagonally, stitched them together across the front, ran the pink ribbon over her shoulders as straps, and tied another piece around her ribs to anchor the bottom. It had no steel, no whalebone, and no back. It still flattened her chest rather than forming separate cups, but it gave her a soft, natural silhouette. When she put the gown back on, the sheer silk fell smooth against her skin, with nothing poking out at the neck or sides.

Adam: At the dance, while other young women stood stiff as statues and avoided laughing too hard, Mary could actually breathe. She danced all night without steel stays digging into her ribs. Between dances, her friends crowded around her in the powder room, pulling at the back of her dress to see what she was wearing underneath. She showed them. Within a few weeks, she was stitching copies for her friends. Then a stranger sent a letter containing a dollar bill, asking for one. That single dollar changed Mary’s mind: this was an entirely new product.

Daphne: She drew up diagrams and hired a patent attorney. On November 3, 1914, when she was twenty-three, the United States Patent Office issued patent number 1,115,674 for her "Backless Brassiere." The word brassiere had started out as an old French term for a baby’s undershirt, which fashion magazines had recently borrowed to describe various chest supports. Mary’s patent helped anchor the word in American English. She set up the Fashion Form Brassiere Company in Boston, hired two women to stitch them by hand, and tried to sell them through department stores.

Adam: But Mary hated manufacturing. She found managing inventory tedious, she hated keeping the books, and the business simply failed to take off. So when an offer came along, she took it.

Daphne: The Warner Brothers Corset Company in Bridgeport, Connecticut, offered her fifteen hundred dollars for the patent rights. That was good money for an unproven business in 1915—around forty-five thousand dollars today—and she signed it over immediately. In her later memoir, she claimed Warner made fifteen million dollars off the design over the following decades. That figure was an exaggeration, and Warner made its real fortune off later patents that improved on her basic handkerchief pattern. Still, buying her out cleared the field for them to dominate the new industry.

Adam: What truly finished off the old corset, though, was not fashion. It was the First World War. In 1917, the United States War Industries Board asked American women to stop buying metal-ribbed corsets so the steel could go directly into the war effort. That single appeal freed up twenty-eight thousand tons of metal—enough, the government proudly noted, to build two full-sized battleships.

Daphne: Once millions of women stopped strapping on heavy steel stays every morning, they refused to go back to them when the war ended. The soft brassiere became the default undergarment of the twentieth century.

Adam: Mary Phelps Jacob moved to Paris, reinvented herself under the name Caresse Crosby, and spent years running an avant-garde printing press, publishing early works by James Joyce, Ernest Hemingway, and Hart Crane.

Daphne: Looking back on her life in her memoirs, Caresse Crosby mused that while she could not say the brassiere would take as great a place in history as the steamboat, she was proud to have invented it.

Adam: Thank you for listening.

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