1970–1979
1970s Polyester Mini Skirt
Identifying Authentic 1970s Polyester Mini Skirt
Authentic 1970s polyester mini skirt pieces (1970–1979) are among the most sought-after items in antique fashion. Synthetic polymer fiber commercially introduced in the 1950s, ubiquitous by the 1970s. Excellent durability and wrinkle resistance; the defining fabric of 1970s fashion.
When examining a potential 1970s polyester piece, the most important diagnostic features are construction method, closure type, and fabric authenticity.Skirt with hemline significantly above the knee, popularized by Mary Quant from 1965. The most symbolic garment of 1960s youth culture and the sexual revolution.
Mini Skirt Authentication Checklist
Authentic 1960s: hemline 4–6 inches above knee
Look for op-art, mod, or bold geometric prints
Synthetic knit or woven; rarely lined in vintage examples
Mary Quant daisy label significantly increases value
Identifying Authentic Polyester
Burn test: melts and beads up rather than burning; smells like chemical/plastic
Pre-1970 polyester: heavier, less refined than modern fabric
Double-knit polyester (1970s): thick, textured, extremely wrinkle-resistant
Check care label: fiber content labeling became mandatory in the US in 1971
Care & Preservation
Machine wash cold, gentle cycle. Do not use hot water or high-heat drying. Medium iron only. Polyester holds dye well — minimal fading risk.
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