Most people suspect they own too many clothes, but they aren’t sure exactly what the “right amount” is. Recent wardrobe studies, in which researchers literally peek inside peoples’ closets, show the scale of the problem is far greater than most of us imagine.
Sixty years ago, the average person owned about 40 garments.
Today, that number has more than quadrupled, with a recent study revealing these numbers continue to trend upwards. The typical wardrobe now contains an average of 199 major pieces. Even more striking: 25%–50% of these items are languishing in the back of drawers and rails.
Our hidden clothing footprint
Research tells us this is not just a clutter issue — it’s a carbon one. Every garment carries a sizeable environmental footprint long before it reaches a hanger, including from fibre production, spinning, weaving, dyeing, cutting, sewing, packaging and global transport.
A jacket that ends up as fashion waste is more than a label and price tag. It’s the sum of all the resources and emissions that brought it into being.
At the same time, donating excess garments to charities is rarely a solution.
Before you channel your inner Marie Kondo and bag up half your wardrobe, it’s worth knowing that most charities are overwhelmed, and only a small fraction of donated clothing is resold. The rest often ends up in landfill or exported overseas, shifting the problem, rather than solving it.
The real issue isn’t simply how much we buy, but how little we wear what we already own.
Wear counts change everything
One of the clearest findings emerging from sustainability research is that the environmental impact of a garment often depends on how many times it’s worn. In a sense, every additional wear helps “offset” the garment’s carbon footprint.
The European Union has calculated the minimum number of wears needed for different clothing types:
• shirts and blouses: 40 wears
• T shirts: 45 wears
• pants, shorts, dresses, skirts, jumpsuits, leggings: 70 wears
• jumpers, cardigans, hoodies: 85 wears
• jackets and coats: 100 wears.
For many people, these numbers may be far higher than expected – and they shift the sustainability conversation from “buying better” to “wearing more”.
The wardrobe equation
My own recent research has gone further by offering a simple mathematical model to calculate how long it takes to reach these minimum wear counts. The formula is straightforward: wearing frequency × wardrobe volume. The results are eye opening.
Take dresses. The average participant in the study owned 23. So if they wore a dress once a week, it would take nearly 31 years to wear each one 70 times. If they wear dresses five times a week, the timeline drops to six and a half years.
The maths makes the issue clear: there is no universal “right” number of clothes. A sustainable wardrobe depends entirely on how often a person wears what they own, which is influenced by factors such as seasonality, climate, lifestyle, laundry habits and personal style.
The maths also becomes more complicated when you look at the entire wardrobe, rather than a single garment type.
Why a tailored approach is needed
Because of this complexity, it’s difficult to declare a fixed number of garments that constitutes a sustainable wardrobe.
As such, the next phase of my project is the development of an interactive wardrobe calculator – a tool designed to help individuals understand their own clothing use patterns and calculate a personalised sustainable wardrobe size.
The Paris 2030 Agreement to stay below 1.5°C of global warming recommends 85 garments or less would be a responsible target – although imposing strict limits does not take individual wearing patterns into account. People need a practical, tailored approach that reflects their real lives.
What the research makes clear is that sustainability isn’t about owning the perfect number of clothes, or purging half your wardrobe. It’s about understanding the maths behind what you own, how often you wear it, and how those choices shape your environmental impact.![]()
Alicja Kuźmycz, Lecturer, Torrens University Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.














LONDON (AP) — The models have packed up, the temporary runways taken down. London Fashion Week on Tuesday wrapped up five hectic days of women's wear shows, a whirlwind display of new colors and textures for next spring from big name designers and newcomers alike. London hosts a more eclectic collection of designers and labels than fashion weeks in New York, Milan and Paris, and the latest crop of spring and summer designs seen this week has been a big mish-mash: Futuristic metallic leathers at Burberry, sweet '50s pastels at Temperley, '70s disco fever at Jonathan Saunders, and '90s minimalism at quite a few other shows. While there was no overriding theme, there were micro-trends set to make their way to high street stores come spring. All-white and monochrome outfits were seen everywhere, as were pretty confectionery shades of mint and lemon. Futuristic, shiny materials like plastic or fabrics with a foil-like, iridescent or even holographic sheen were popular, as was the use of sheer, feminine layers in organza, chiffon or mesh. On Tuesday, things kicked off with '70s-inspired florals, wide-leg trousers and mannish suits at luxury label Mulberry, best-known for its leather handbags. The collection, delivered with a humorous British flair, nodded to several of the season's popular trends: Sleek trouser suits, all-season leather, metallic jacquard, and head-to-toe ice-cream pastel shades. Model-turned-designer Roksanda Illincic followed with a collection of dresses with simple feminine shapes and minimal detailing, leaving her use of beautiful color combinations and glossy fabrics to do the talking. Day Five also saw collections by a handful of younger and adventurous designers. Simone Rocha, the daughter of British fashion institution John Rocha, deftly combined schoolgirl innocence and tough attitude, while maverick duo Meadham Kirchoff sent the party home with a spectacularly whimsical show of Marie Antoinette fashion gone mad. Tuesday's shows ended a week that saw models and celebrities like Kate Moss and One Direction's Harry Styles flocking to the catwalks' front row. Lady Gaga stole the limelight Sunday with a starring turn at milliner Philip Treacy's comeback show. The fashion brigade moves on to Milan for more shows that begin Wednesday. Paris Fashion Week begins next Tuesday. MULBERRY Luxury brand: Mulberry has ditched most of the playfulness in its recent seasons, showcasing a spring collection that's still quirky but definitely grown-up. Mulberry's show at London's swanky Claridge's hotel was decorated with dozens of garden gnomes and fake geckos crawling on rose bushes - a typically wacky atmosphere of pretty English garden meets exotic creatures. But appearances were deceptive, and the clothes themselves were more sophisticated than the setting suggested. Creative director Emma Hill sent models down the catwalk in oversized leather biker jackets and mannish tuxedos in navy, black and white. The 1970s-inspired collection had floral embroidery, floor-length skirts, flower buttons and high-waisted wide legs, updated with metallic jacquard printed with mini-flowers and geckos. Leather separates and trouser suits balanced flirty pleated skirts. There were muted brown ensembles along with head-to-toe sweet pastels in mint and peach - including pastel-colored shoes and handbags, the brand's bestselling item. ROKSANDA ILLINCIC: Taking her inspiration from artists, Roksanda Illincic's catwalk show had plenty of ensembles for the woman who wants to look stylish without trying too hard. Simple, streamlined shapes like tailored shifts and breezy A-line dresses came in high-impact color combinations that really popped: Tangerine with cobalt, mango, dirty pink or white. Sometimes all the colors came together on one dress, like a modern abstract painting. Models cradled oversized satin clutch bags and wore patent courts with multi-colored block heels. The show, staged in the Savoy Hotel's glamorous ballroom, ended with a series of ensembles made in a glossy, laminated organza. Illincic counts U.S. first lady Michelle Obama and Britain's Kate Middleton among fans of her sleek style. Her show had many of her popular signature elements: Beautiful colors, high-waisted silhouettes, feminine bell sleeves and modest mid-calf or ankle-grazing hemlines. But this season the designer said she wanted to shake up the elegance with casual wear - like taking an evening dress shape and making it out of T-shirt or jersey materials. "It gives an element of fun, something unexpected," she said. SIMONE ROCHA: Budding talent Simone Rocha has her designer dad's giant shoes to fill, but she seems to be taking it all in her stride. The 26-year-old showcased her latest spring collection at London Fashion Week Tuesday, a collection of all-white outfits, sheer cut-out panels, neons and leather that mixed schoolgirl innocence with cool attitude. The collection started with dazzling white button-up shirts and boyish shapes in Broderie Anglaise, but the prim look was soon undercut by thigh-revealing, irregular shaped sheer panels on the front or back of skirts. High-collared, neat shapes in muted shades of butter and toffee followed, but soon things were shaken up with a pale sundress overlaid with a high-shine neon yellow PVC plastic, all-over metallic gold foil vests and skirts, and floral-crocheted skirts and oversized jackets in fluorescent yellow and neon coral. Models wore mannish brogues with clear plastic soles and heels, a design that has been worn by celebrities including Rihanna and proved to be Rocha's best-selling product. Rocha debuted at London Fashion Week in 2010. MEADHAM KIRCHOFF: English-French design duo Edward Meadham and Benjamin Kirchhoff are known for staging riotously fun and different shows, and this season they met expectations with a collection piled high with over-the-top, Marie Antoinette style corsets, bodices, bows and frills. Although the invitation and the opening track told of a humorous "damsel in distress" theme, the models were more like fairy godmothers with an enchanted wardrobe. Acting sleepy or deep in thought in their theatrical outfits, models drifted around stands set up on the catwalk and plucking roses and cupcakes from them. There were big puffy sleeves, thigh-high boots, feather gloves and big skirts layered over skinny trousers, all embellished with lashings of bows and jewels. Not very practical, but certainly shows the fun and entertaining face of London fashion. 






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