The first thing you notice in a Saint Laurent atelier photograph from 1968 is not the sketches or the mannequins

The first thing you notice in a Saint Laurent atelier photograph from 1968 is not the sketches or the mannequins. It's the ashtrays. Heavy glass, scattered across every surface, each one holding a Gitane burned halfway down. The second thing is the hem allowance on a pair of trousers: four centimetres, folded twice, pressed flat. That much cloth left over means the client can let them out, take them up, or pass them on. It means the garment was made to last longer than the season it debuted in.

We talk about Saint Laurent as though it were all about the smoking jacket and the Mondrian shift. And it was, in the way that a house is about its front door. But a house is also its joinery, its window casements, the way the floors meet the skirting. Saint Laurent built an entire vocabulary that didn't need a logo or a star bag to announce itself. Most of it, we've forgotten.

The founding signatures

Yves Saint Laurent opened his own maison in 1961 with Pierre Bergé, two years after leaving Dior. The early collections were about wearability in a way that sounds unremarkable now but was nearly heretical then. He put women in trouser suits. He cut peacoats in navy wool and sold them as evening wear. He showed safari jackets with clean, flat pockets and a single pleat at the back yoke. These weren't statements. They were working garments elevated by cut and cloth, then presented as though they'd always belonged in a wardrobe that also held ballgowns.

What made them Saint Laurent wasn't the novelty. It was the shoulder. A Saint Laurent shoulder from the sixties and seventies sits square but not stiff. There is no padding to speak of, just a clean line that follows the natural slope of the body and extends it by half an inch. The effect is architectural without being aggressive. You can see it in the smoking jackets, yes, but also in the blouses, the lightweight wool coats, even the knitwear. The house built its silhouette from the collarbone down.

Then there's the waistband. Saint Laurent trousers from that era—and we're talking about the tailored ones, not the jeans—sit just above the hip and fasten with a single hook and a hidden zip. The waistband itself is narrow, less than three centimetres, and it's always lined in grosgrain. That lining does two things: it grips the shirt so the trousers don't slide, and it distributes weight so the cloth doesn't pucker. It's the kind of detail you don't notice until you've worn a pair without it.

The house also had a way with black that wasn't about drama. Saint Laurent black was matte. The fabrics—wool crêpe, silk faille, cotton poplin—absorbed light instead of reflecting it. A black Saint Laurent blouse from 1975 looks like a shadow with sleeves. It doesn't announce itself. It just makes everything around it quieter.

The Rive Gauche codes

When Saint Laurent launched its ready-to-wear line in 1966, it wasn't a diffusion project. It was an experiment in whether you could make real clothes—cut properly, finished properly—and sell them in a shop that wasn't a couture salon. The first Rive Gauche boutique opened on the rue de Tournon with white walls, chrome fixtures, and no carpet. The clothes hung on simple rails. You could touch them.

Rive Gauche introduced a set of signatures that didn't rely on haute couture construction but kept the house's obsession with proportion. The peasant blouse, for instance: full sleeves gathered at the cuff, a drawstring neckline, always in cotton or lightweight silk. It looked like something you'd find in a Breton market, except the sleeve cap was set in properly and the gathers were distributed by hand. Worn with high-waisted trousers and a belt, it became the house uniform for women who didn't want to look like they were wearing a uniform.

Then there were the blouses with the single chest pocket. Not a patch pocket—those bulk. A welt pocket, narrow and vertical, placed just left of centre. It served no real function. You couldn't fit much more than a folded receipt in there. But it broke up the expanse of cloth across the chest and gave the eye somewhere to land. Saint Laurent used it on everything from silk shirts to denim work jackets. It became a marker, subtle enough that only people who knew the house would recognise it.

The jewellery from that period deserves mention. Oversized gold cuffs, resin bangles in tortoiseshell, long chains with abstract pendants. None of it was precious in the traditional sense. It was costume jewellery made with the same attention to weight and balance as the tailoring. A Saint Laurent cuff from 1972 is heavy enough that you feel it on your wrist all day. That's intentional. It's a reminder that you're wearing something considered.

What Vaccarello kept

Anthony Vaccarello took over as creative director in 2016, following Hedi Slimane's four-year tenure. Slimane had rebranded the house as Saint Laurent Paris, thinned the silhouettes, and leaned hard into rock-and-roll references. Vaccarello didn't reverse course so much as refocus. He brought back the smoking jacket, but he also brought back the narrow waistband, the square shoulder, the matte black.

His first collection included a series of tailored blazers with a single-button closure and a deep V-shaped lapel. The shoulder line was clean, almost flat, with just enough structure to hold the shape. The cloth was a 10oz wool gabardine, lightweight enough for year-round wear. It was a direct reference to the house's seventies output, but it didn't feel nostalgic. It felt like someone had remembered how to cut a jacket that didn't need to shout.

Vaccarello also revived the use of satin-back crêpe, a fabric Saint Laurent used constantly in the seventies. One side is matte, the other has a subtle sheen. You can use it either way, or mix them in a single garment. Vaccarello started showing dresses and blouses with the shiny side facing in, so you'd only see it at the cuffs or the collar. It's the kind of detail that reads as expensive without being loud about it.

The accessories under Vaccarello have been less successful at holding onto the house codes. The bags are fine—well made, commercially smart—but they don't carry the same sense of restraint. The jewellery has trended toward logo-heavy pieces that would've felt out of place in a Rive Gauche boutique. But the tailoring, the evening wear, the way a sleeve is set: those are still there.

What we lost

Saint Laurent used to make a cotton poplin shirt with a rounded collar and a single button at the back of the neck. The collar was cut on the bias so it wouldn't wrinkle. The button was mother-of-pearl, small enough that you'd miss it unless you were looking. It came in white, cream, and black. It cost less than a silk blouse but lasted longer. You don't see it anymore.

The house also used to finish its trouser hems with a blind stitch, so there was no visible line on the outside. It took longer and required a machinist who knew what they were doing. Now most of the trousers are finished with a standard hem, folded once and stitched flat. It's faster. It's cheaper. It's not the same.

There's a photograph from 1983 of Yves Saint Laurent in his studio, holding a length of black wool crêpe up to the light. He's checking the weight, the hand, the way it falls. His face is serious, almost annoyed. The cloth isn't right. It's close, but it's not right. That's the code we've forgotten. Not the smoking jacket. The four-centimetre hem allowance. The grosgrain lining. The afternoon spent looking at black cloth until you find the one that doesn't reflect.