The Hands Behind the Jacket

Jacqueline Mercier has been setting sleeves at Chanel for thirty-two years. She sits at a worktable on rue Cambon's fifth floor, a half-finished tweed jacket pinned to a dress form beside her. The shoulder is still open. She lifts the sleeve head, adjusts the pitch by two millimetres, pins it again. This will happen four more times before she's satisfied.

Mercier is one of seventeen premières mains in Chanel's tailoring atelier. She does not design the jacket. She makes it possible.

The iconic Chanel jacket—boxy, braided, paired with everything from jeans to jersey—has been in continuous production since 1954. Gabrielle Chanel introduced it after watching men move freely in their own clothes, then engineering a women's garment that allowed the same range of motion. The silhouette has barely changed. The construction has not changed at all.

What has changed is who knows how to do it.

Training Ground

Mercier started at sixteen. She entered Chanel through the atelier system, not through design school. This is still the primary path for petites mains—the term translates as "little hands," though the work is anything but small. Candidates apply directly to the atelier. If accepted, they spend two years learning to sew a straight seam, set a sleeve, finish a hem by hand. They do not touch tweed for the first six months.

The atelier operates on a structure unchanged since the couture system formalised in the nineteenth century. At the top sits the première, responsible for interpreting the design and overseeing construction. Below her, the secondes and petites mains execute the work. A single jacket passes through at least six pairs of hands before it reaches the runway.

Mercier's training was traditional. She learned on muslin, then on wool, then on tweed. Her first jacket took forty hours. She now completes one in twelve, though the time varies depending on the fabric. Heavier tweeds require more easing at the shoulder. Lighter ones shift during construction and need constant re-pinning. Chanel's tweeds come from multiple mills—Linton in Cumbria, Lesage in Paris, others in Scotland—and each behaves differently under the needle.

The jacket's structure is deceptive. It looks simple. It is not. The body is cut without darts, relying instead on subtle shaping through the side seams and a weighted chain sewn into the hem. The chain—Chanel's signature—keeps the jacket from riding up when the wearer moves. It is sewn by hand, link by link, and must be positioned so the jacket hangs without pulling. Get the placement wrong and the whole thing skews.

Breakthrough

Mercier's breakthrough, if you can call it that, came in 2004. Karl Lagerfeld had designed a jacket with an asymmetric closure and a hem that dipped lower on one side. The pattern didn't account for how the chain would distribute weight unevenly. Mercier solved it by splitting the chain into two sections, each weighted differently, and sewing them at opposing angles. The jacket hung correctly. Lagerfeld never mentioned it, but the technique became standard for asymmetric designs.

This is the nature of atelier work. The designer gets credit. The première gets her name in the archives, if that. Mercier does not seem bothered. When asked, she shrugs. "The jacket is the thing," she said in a 2019 profile for Le Figaro. "If it works, I've done my job."

Still, Chanel has made efforts in recent years to name its artisans publicly. In 2022, the maison released a short documentary featuring Mercier and three other premières mains, each discussing their craft. The film was part of a broader push to highlight the métiers d'art—the specialist ateliers Chanel acquired in the 1980s and 1990s to preserve traditional techniques. These include Lesage for embroidery, Lemarié for feathers, Massaro for shoes, and Goossens for jewellery.

The tailoring atelier, however, is not a métier. It is the house itself. Chanel's ready-to-wear is constructed in the same ateliers, by the same hands, as its haute couture. This is unusual. Most luxury houses separate the two. Chanel does not, and the result is a ready-to-wear jacket that is, functionally, a couture garment produced at scale.

Signature

Mercier's signature, insofar as she has one, is the sleeve. She sets it higher than most premières, which gives the jacket a cleaner line through the shoulder but requires more precision. The sleeve head must be eased into the armscye without puckering, and the pitch must allow the arm to move forward without pulling the back. This is harder than it sounds. Tweed does not ease the way wool does. It has to be coaxed.

She uses a technique she learned from her own première, who learned it from hers. The sleeve is pinned in place, then basted by hand with a running stitch. Mercier tries the jacket on a fit model, checks the range of motion, removes it, adjusts the pitch, and bastes it again. She does this until the sleeve moves with the body. Only then does she sew it permanently.

The process is slow. It is meant to be. Chanel produces roughly twelve hundred tweed jackets per season, split between ready-to-wear and haute couture. Each one is made this way.

Next Chapter

Mercier will retire in three years. She is training two younger petites mains to take over her work, though neither has her speed yet. This is expected. Speed comes with repetition, and repetition takes time.

The question facing Chanel, and houses like it, is whether enough people are willing to take that time. Atelier work pays decently but not extravagantly. It requires years of apprenticeship before you touch anything that will be seen. The hours are long. The recognition is minimal. Younger candidates increasingly choose design school over the atelier system, and those who do enter often leave for brands that will credit them publicly.

Chanel's response has been to raise wages and shorten the apprenticeship period, though not by much. The maison also offers more public-facing opportunities—workshops, exhibitions, the occasional documentary. Whether this is enough remains unclear.

Mercier is not worried. "There will always be someone who wants to learn," she told Le Figaro. "The jacket isn't going anywhere."

She is probably right. The Chanel jacket has survived the death of its founder, the tenure of three creative directors, and countless shifts in taste. It endures not because it is iconic—though it is—but because it is constructed to last. The tweed is dense. The seams are finished by hand. The chain is sewn in place, link by link, by someone who has done it ten thousand times before.

That someone, for now, is Jacqueline Mercier. In three years, it will be someone else. The jacket will look the same.