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Bell-bottoms today, miniskirts tomorrow: Math reveals fashion's 20-year cycle
- March 17, 2026 at 10:30 PM
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Fashion insiders and beauty magazines have long cited the "20-year-rule"—the idea that clothing trends often resurface every two decades. According to Northwestern University scientists, that observation isn't just anecdotal. It's a mathematical reality.
Originally published at Phys.org