The 30 Wear Rule is a sustainability movement in 2026 that encourages consumers to break the cycle of "fast fashion." Originally popularized by Livia Firth, the rule asks you to pose one question before purchasing any item of clothing: "Will I wear this at least 30 times?" If the answer is no, you shouldn't buy it. In 2026, this rule has become a central pillar of the "slow fashion" lifestyle, as the average garment is worn only seven times before being discarded. By committing to 30 wears, you ensure that you are investing in higher-quality, durable pieces rather than disposable trends. This significantly reduces your environmental footprint, as extending a garment's life by just nine months can reduce its carbon, water, and waste footprints by 20–30%. It’s a simple mental check to combat the 18 million tonnes of clothing waste generated annually worldwide.