Coastal Grandmother Returns for Autumn 2026

Hello Magazine has named coastal grandmother the eccentric new aesthetic to know for autumn, giving a seaside look a high fashion makeover for city life. The magazine describes the updated version as chunky knitwear, clashing colour and unexpected layering, a clear break from the quiet luxury that dominated recent seasons. Where the summer version leaned on white linen and bare legs, the autumn version piles on texture: wool, cashmere, mohair and padded slippers, all in the service of looking warm rather than polished.

The look did not start on the catwalk. Home Beautiful reported that the term coastal grandmother first caught on in 2022, when TikTok creator Lex Nicoleta posted a video about it that went viral. The inspiration was the world of director Nancy Meyers, above all Something's Gotta Give, the film in which Diane Keaton plays a playwright living in a beautiful Hamptons house full of linen sofas and fresh flowers. The aesthetic borrowed the house as much as the wardrobe, and it has kept that double life ever since, showing up in interiors as well as in clothes.

What the runways did with it

For autumn, the fashion circuit picked the look up and ran with it, according to Hello Magazine. Dries Van Noten showed kitschy, colourful knits teamed with duffle coats, thick socks and longline shirts, while Tod's went for oversized raincoats in vibrant mustard. Prada paired knee length skirts with sunset hued crocheted scarves and heavy layers, and Chloe championed strong shouldered tailoring worn with floral blouses and flouncing chiffon skirts. The through line was not minimalism but personality, with clashing colour and odd pairings doing the work that clean lines used to do.

Off the runway, the same spirit shows up in street style. Hello Magazine pointed to Katie Holmes, whose recent New York outfits lean into the eclectic coastal grandmother mood, mixing heritage pieces with relaxed shapes. The appeal is easy to see: the look is built from ordinary garments, a duffle coat, a Fairisle cardigan, a tartan skirt, fisherman sandals worn with chunky cashmere socks, rather than from anything that requires a special occasion. It is dressing for a long walk and a late lunch, not for a red carpet.

The real thing versus the fantasy

One writer who grew up spending summers with a coastal grandmother in Kittery, Maine, offered a useful correction to the fantasy version, HighFashion reported. The viral image of the lifestyle involves farmers markets, oat milk lattes and elegant dinners in Cape Cod houses. The writer remembered something plainer: a family of five squeezed onto blow up mattresses in a converted garage, shopping at Walmart, chasing fireflies and exploring rocky beaches. Her grandmother, she recalled, would say that if there was floor room, there was sleeping room, and she once preferred fresh scallops to a designer bag. The piece lands because it draws a line between an aesthetic and a life, and it suggests the best version of the trend borrows the warmth, not the wealth.

That distinction also explains why the look keeps coming back. The original coastal grandmother wave, according to retail analysts at EDITED, gathered more than a billion views on TikTok, and its backbone was never seasonal: neutral hues, turtlenecks, button down shirts and natural fabrics that work in any month. Autumn simply gives it better weather. Knitwear and coats suit the mood in a way that linen never quite did, and the palette deepens from white and sand into olive, mustard and tartan.

How to wear it without looking costumed

The easiest mistake is to pile on every nautical signal at once. A recent guide to coastal grandmother decor warned that stacking navy stripes, rope trim and anchor prints together turns the room nautical, which is a different and louder look entirely, and the same warning holds for clothes. The guide recommended keeping the palette quiet, warm sand, soft driftwood grey and one muted blue green used sparingly, and letting one weathered piece do the talking rather than a room full of matching new ones. A chipped paint dresser or a sun bleached stool beats a full set of distressed furniture, because the wear looks earned rather than factory made.

The same restraint works in a wardrobe. Start with one anchor piece, a duffle coat or a Fairisle knit, and build around it with plain, comfortable shapes. Let the textures clash a little, a chunky knit against a pleated tartan skirt, a soft scarf against a stiff coat, and skip the costume details. The look works when it reads as a person who likes the seaside and dresses for cold weather, not as someone dressed up as a grandmother for a party. It sits comfortably next to the other autumn interiors trend, the collected look that rewards rooms assembled over time, and next to louder revivals like the McBling aesthetic and the Afrohemian decor wave. Coastal grandmother is the quieter cousin in that family, and this autumn it finally has the weather to match.

For readers who want to try it, Hello Magazine's shopping picks for the season include an olive wool blend duffle coat from MAX and Co, a navy wool mohair Fairisle cardigan from Hush, a heritage tartan midi skirt from Barbour and fisherman sandals from Gucci. None of them is essential on its own. The point of the coastal grandmother look was never a single purchase, and it still is not. It is a way of dressing that favours comfort, texture and a bit of eccentricity, and it happens to be exactly right for the months when the coast turns cold and the knitwear comes out.