How to style a trench coat depends on where the hem falls and what fits underneath. A knee-length coat gives straight jeans a long outer line. A short trench leaves the waistband and most of the trouser leg visible. If you wear the coat mostly open, check that the collar lies flat and the fabric falls comfortably at your sides.

Start with a coat and clothes you already own. An open trench, a tee, dark jeans, and loafers make a useful first outfit. The eight other combinations below give you options for work, dresses, cooler mornings, and long walks.

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Choose the layer before you choose a size

Try the trench over the bulkiest layer you expect to wear with it. Button it, then reach forward as if you were holding a steering wheel or reaching for a bag. If the sleeves and upper back pull, a thinner knit may fix the issue; otherwise try another cut. Also check the product details if you need a coat for heavy rain, since a trench shape alone doesn't tell you how the fabric or seams handle water.

01. Jeans and loafers beneath the trench

A woman wears an open beige trench over a white tee, with dark jeans and brown loafers.SaveShop similar

A beige trench over a white tee and indigo jeans is a simple place to start. Brown penny loafers and a brown tote warm up the beige. Leave the coat open so the dark denim stays visible down the front. If you prefer tying the belt behind you, try a low knot that doesn't bunch the back when you lean against a chair.

02. A trench over office trousers

A woman wears an open stone trench with a pale blue shirt, charcoal trousers, and black loafers.SaveShop similar

Stone, light blue, and charcoal give a trench outfit a cooler palette. Under an open coat, a light-blue Oxford and charcoal trousers feel appropriate for a day at the office. Black loafers stay in the dark range of the pants. If the shirt cuffs bunch in the coat sleeves, fold them once before putting the coat on.

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03. Sneakers for a long day on foot

A woman wears a beige trench over a gray sweater with black jeans and white sneakers.SaveShop similar

Start with the shoes on a day you're walking between errands. Here white sneakers and straight black jeans keep the outfit simple, and an above-the-knee beige trench is easy to take off indoors. A gray crewneck gives you warmth without the bulk of a jacket underneath. Check whether the sneaker tongue is pushing the front hem up; a slightly shorter hem may sit better.

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04. A striped top under khaki

A woman wears a khaki trench over a striped cream and navy top, with dark jeans and black flats.SaveShop similar

Khaki gives a striped knit a warmer border than a gray coat would. Dark jeans help the navy in the stripes carry through the outfit, and black ballet flats keep the bottom quiet. Leave a little space around the neck so the stripes and open lapels both read. If you want socks with your flats, dark navy keeps the line between shoe and jeans subtle.

05. Layering over a midi dress

A woman wears an open stone trench over a longer black midi dress with black ankle boots.SaveShop similar

Try the hem of a midi dress against the coat before leaving home. A stone trench that stops above the hem of a black dress leaves a deliberate band of black visible. Black ankle boots keep the focus on the two lengths. Walk a few steps with the coat unbuttoned to see whether the dress swings freely around your knees.

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06. Cream jeans and warm brown shoes

A woman wears a beige trench over a chocolate sweater, with cream jeans and brown loafers.SaveShop similar

A chocolate sweater, cream jeans, and brown loafers give a warm beige trench three distinct depths. The darker knit is useful if the coat and jeans are close in color; it creates a clear break without introducing a bright accent. Try the outfit with the coat off, too. The sweater and shoes should still feel related without the beige layer.

07. A short trench with wide trousers

A woman wears a short beige trench over a white top, with navy wide-leg pants and brown flats.SaveShop similar

With navy wide-leg trousers, a sand-colored short trench leaves more of the trouser shape visible. A white top under the open coat brightens the center, and dark brown flats finish the look without height. Check the hem in those flats before choosing the jacket. If the trousers pool, the extra length near the floor can draw more attention than the cropped coat.

08. A warm layer for cold mornings

A woman wears a beige trench over a burgundy turtleneck with black trousers and ankle boots.SaveShop similar

A burgundy turtleneck, black trousers, and ankle boots work beneath a beige trench on a cool, dry morning. A fine knit usually takes up less room inside the coat than a thick folded collar. If you need extra warmth outside, try adding a scarf you can take off on transit. For more color ideas, see the burgundy sweater guide.

09. An olive trench instead of beige

A woman wears an olive trench over an ivory knit with dark jeans and white sneakers.SaveShop similar

Olive is a useful alternative if most of your jackets are already beige. An ivory sweater makes the green easier to see above dark jeans. Low white sneakers pick up the light knit without matching its shade exactly. If the coat is a dark olive, put the sweater and coat next to each other in daylight to see whether the contrast is strong enough for you.

Do the coat and dress hems have to match?

No. Try one clear edge above the other. If both hems hit almost the same place, walk and sit to see what happens: the two layers may separate and settle at different heights anyway. For other combinations with a lighter bottom, try white jeans through the seasons.