How To Style Knitwear, According To Julie Sergent Ferrer

There is something undeniably comforting about knitwear. It wraps you in warmth, moves with your body, and carries with it a quiet elegance that few other fabric categories can match. But for many people, styling knitwear remains one of fashion’s great unsolved puzzles. How do you make a chunky sweater look intentional rather than lazy? How do you wear a knit dress without feeling like you’re wrapped in a blanket? How do you layer ribbed pieces without adding visual bulk?

Julie Sergent Ferrer, the French-born stylist and content creator who has built a devoted following through her effortlessly put-together outfits and deeply considered approach to wardrobe-building, has answers to all of these questions. Her philosophy around knitwear is particularly illuminating because it rejects the idea that these pieces are simply cold-weather filler. For Julie, knitwear is a foundation — a starting point from which personality, proportion, and creativity can emerge.

What follows is a deep dive into her approach, her key principles, and the practical steps you can take to style knitwear the way she does: with ease, intention, and a distinctly European sense of cool.

Start With Fit, Always

Julie’s first and most non-negotiable rule when it comes to knitwear is fit. Not the fit dictated by trends — whether oversized is “in” or slim is “back” — but the fit that works for your specific body and the specific story you want your outfit to tell.

Her thinking goes something like this: knitwear has natural give. Unlike a structured blazer or a rigid denim jacket, a knit will conform to whatever shape it encounters. That means fit mistakes are more forgiving in one sense, but they’re also harder to hide. A sweater that’s slightly too big in the shoulders will slouch in ways that read as accidental rather than stylish. A knit that’s cut a little too short will pull every time you reach for something, and your midriff will make appearances you never planned.

Julie’s recommendation is to try knitwear on whenever possible — or when shopping online, to read size guides carefully and consider the weight of the yarn. A lightweight merino will drape differently than a chunky wool blend, and the “right” size can shift based on how heavy the fabric is. Generally speaking, she suggests that lighter knits can be sized down slightly for a more refined look, while thicker, more textural pieces can accommodate going up a size without losing shape.

The goal, always, is intentionality. If a sweater is oversized, it should look deliberately oversized, not like you borrowed it from someone much larger. If it’s fitted, it should skim without clinging, suggesting shape without announcing it.

Master the Art of the Tuck

One of Julie’s most recognizable styling moves is the tuck — and she uses it with knitwear more than with any other clothing category. The half-tuck, the full front tuck, the side tuck, and the back tuck are all tools in her arsenal, and each one does something specific to an outfit’s silhouette and energy.

The half-tuck is her most versatile move. By tucking just the front portion of a knit sweater into a waistband (whether that’s a trouser, a skirt, or even relaxed jeans), she creates a defined waist without going full-on polished. It reads as casual but considered — the sartorial equivalent of a sentence that doesn’t end with a period. It trails off in the most appealing way.

The full tuck works best with finer knits. A thin ribbed sweater tucked completely into a high-waisted trouser is one of Julie’s signature combinations, and it’s easy to understand why. The result is streamlined and intentional, with the knit providing just enough texture and softness to prevent the look from feeling stiff. She often pairs this with a straight-leg or wide-leg trouser in a complementary neutral, letting the knit handle the personality while the bottom half stays architectural.

Her advice for the full tuck: make sure your knit is thin enough to actually stay tucked without creating a lumpy waistband situation. Chunky knits tucked into trousers tend to bunch and migrate over the course of the day, which defeats the purpose entirely. Save the full tuck for your finer gauges.

Build a Palette of Knit Neutrals (And Then Break It)

Julie is known for her love of neutrals — camel, cream, oatmeal, taupe, stone, warm white, and soft grey appear throughout her wardrobe like a recurring motif. Knitwear, she has said, is the best vehicle for building a neutral palette because the texture inherent in knit fabrics prevents the look from going flat or boring.

Two cream-colored pieces would look washed out in a cotton or polyester context. But two cream knits — one a smooth fine-gauge and one a textured bouclé, for example — create an interesting tonal outfit that plays on surface variation rather than color contrast. This is a technique Julie returns to often: tonal dressing within a single family of neutrals, with knitwear providing the visual complexity.

But she doesn’t stop there. Once she has established this foundation of knit neutrals in her wardrobe, she uses one or two statement knit pieces to punctuate her outfits throughout the season. A cobalt blue sweater worn with stone trousers. A deep forest green knit dress belted and worn with chocolate-brown boots. A single pop of burgundy in an otherwise sand-and-cream palette.

Her principle here is to buy your statement knits in colors that actually work with the rest of your wardrobe rather than colors that are simply trending. If your entire wardrobe skews warm, a cool-toned lavender knit will always feel like an outlier, however beautiful it is on its own. She encourages people to audit their wardrobe before purchasing statement pieces — not to be restrictive, but to be intentional. A statement knit that connects to at least three other things you own is an investment. One that connects to nothing is a beautiful mistake.

Layer With Purpose and Proportion in Mind

Layering is perhaps the most versatile thing you can do with knitwear, and Julie has developed a highly refined approach to it. Her layering philosophy can be summarized in one guiding question: does each layer earn its place, or is it simply there for warmth?

When each layer earns its place, the outfit has depth and storytelling built into it. A fine-gauge turtleneck worn beneath a linen blazer in late autumn is a layer that earns its place — it adds warmth, introduces a new fabric story (the softness of knit against the structure of linen), and allows the collarbone and neck area to remain covered without resorting to a scarf. A chunky cardigan layered over a simple slip dress is another example: the cardigan is cozy and relaxed, the slip dress is feminine and lightweight, and together they create a contrast that neither piece could produce alone.

Julie is particularly skilled at layering knitwear with suiting. A slouchy ribbed sweater tucked into wide-leg tailored trousers, worn beneath a structured long coat, is a signature combination she returns to. The knit softens the formality of the suiting, the coat adds authority, and the whole outfit reads as put-together without being stiff. This is her knitwear philosophy in miniature: use the softness of knit to humanize whatever it’s paired with.

Proportions matter enormously in knitwear layering. If the knit itself is voluminous — a chunky cable-knit sweater, for instance — the pieces layered beneath and over it should be slimmer and more contained. A thick oversized sweater over slim straight-leg trousers, under a long straight coat, creates a clean silhouette even though the sweater itself is substantial. Alternatively, a slim knit layer can be paired with wider or more voluminous pieces, because the knit provides a fitted core that prevents the overall look from becoming shapeless.

Don’t Underestimate the Knit Dress

Julie has spoken at length about the knit dress being one of the most underutilized items in most people’s wardrobes. People own them and love them in theory, but struggle to style them beyond the obvious — boots in winter, sandals in summer — without the outfit feeling somewhat repetitive.

Her approach to the knit dress centers on accessories and layering as transformation tools. A simple ribbed midi knit dress becomes something entirely different when styled four different ways: with ankle boots and a leather belt at the waist, with loafers and a long denim jacket, with heeled mules and a silk scarf at the neck, or with knee-high boots and a structured blazer over the top. Same dress, four distinct personalities. This is the exercise she encourages: before buying a new piece, imagine at least three distinct ways to style it. If you can only think of one, the piece probably isn’t as versatile as it seems.

She also advocates for belting knit dresses, though with an important caveat. The belt should sit at the natural waist (not the hip, which tends to read dated) and it should be proportional to the weight of the knit. A delicate skinny belt on a heavy chunky-knit dress will disappear into the fabric and look undone in the wrong way. A slightly wider, more substantial belt — in leather or a complementary woven fabric — will anchor the silhouette and add definition in a way that feels purposeful.

Embrace Texture Mixing

One of the most sophisticated things Julie does with knitwear is pair it with unexpected textures. Knitwear is inherently tactile — it invites touch in a way that most fabrics don’t — and she leans into that quality by surrounding it with contrasting textures that create visual and sensory interest.

Some of her favorite pairings include knit and leather (a fine-gauge sweater tucked into a leather midi skirt), knit and silk (a cashmere crewneck worn beneath a silk slip dress, with the slip skimming over the knit), knit and denim (obviously a classic, but she elevates it by paying attention to the weight and wash of the denim relative to the weight of the knit), and knit with sheer or organza layers (particularly beautiful in transitional seasons, where a sheer skirt over a ribbed knit body creates something unexpectedly romantic).

The principle behind all of these combinations is contrast. Knitwear is soft, textured, and matte. It benefits enormously from being placed next to something harder, smoother, or shinier. The contrast doesn’t need to be dramatic — it can be as subtle as pairing a textured boucle sweater with a smooth crepe trouser — but it needs to exist. Outfit monotony, in Julie’s view, is rarely about color. It’s usually about texture.

Invest in Quality Over Quantity

If there is one thing Julie says repeatedly about knitwear, it is this: buy less and buy better. Knitwear is one of the categories in fashion where quality differences are most immediately apparent, and where they matter most over time.

A fast-fashion acrylic sweater and a quality merino or cashmere sweater may look similar on a hanger. After three wears, the difference is obvious. The cheap sweater pills, loses its shape, and develops a dull, plasticky appearance. The quality knit softens with washing, holds its structure, and ages in ways that look like character rather than deterioration.

Julie recommends building a knitwear wardrobe slowly and deliberately. Rather than buying several sweaters each season to chase trends, she advocates for identifying the gaps in your existing wardrobe — the weight, the neckline, the color — and filling them with the best-quality piece you can find within your budget. Over five years, this approach produces a knitwear wardrobe that genuinely works, where every piece connects to others and where nothing needs to be replaced because it fell apart.

Her hierarchy for knitwear investment goes something like this: prioritize the pieces you’ll reach for most often — a neutral crewneck or turtleneck in a mid-weight that works across seasons, a fine-gauge cardigan that layers easily, a ribbed tank or bodysuit for tucking. These are the workhorses. Spend well on them. The statement pieces — the bold color, the dramatic sleeve, the unusual stitch — can be sourced more economically because you’ll wear them less frequently.

Seasonal Transitions and Year-Round Knitwear

Perhaps the most liberating element of Julie’s knitwear philosophy is her refusal to treat it as a seasonal category. In her view, knitwear belongs to every month of the year — the question is simply about weight and construction.

In winter, she reaches for heavier weights: chunky cables, doubled-up ribbing, thick wool blends worn over turtlenecks and under coats. In spring and autumn, she transitions to mid-weight options — fine merino, cotton-linen blends, lightweight cashmere — that work in the shoulder seasons without overheating. In summer, she doesn’t abandon knitwear entirely but instead incorporates open-stitch linen knits, crocheted pieces, and very fine silk-cashmere blends that breathe while still delivering the soft, relaxed aesthetic she loves.

This year-round approach means her knitwear pieces get significantly more wear than a traditional “sweater season” mindset would allow. A fine-gauge ivory sweater might be worn in February over a turtleneck, in April with a silk midi skirt, and in September tucked into wide-leg trousers. The same piece, different contexts, different moods — which is, in the end, exactly what great knitwear should do.

The Final Word

Styling knitwear well, according to Julie Sergent Ferrer, is not really about following rules. It’s about developing an eye for proportion, a feel for texture, and a clear sense of your own wardrobe’s logic. The techniques she uses — the tuck, the belt, the tonal palette, the unexpected texture pairing — are all expressions of a deeper principle: that getting dressed should feel like a considered act, not an afterthought.

Knitwear, when chosen and worn thoughtfully, is one of the most powerful tools in a wardrobe. It softens, it warms, it grounds, and it adds a dimension of comfort that no other fabric can quite replicate. The goal is simply to let it do its job — and to build outfits around it that help it do that job even better.

Start with one piece. A good one. Try tucking it, belting it, layering it, pairing it with something unexpected. See what it becomes when it has the right context. That, more than any specific styling trick, is what Julie’s approach is really about: curiosity, experimentation, and the quiet confidence that comes from knowing your wardrobe well.