Snippet from an etiquette book published in 1967:
“A woman is well-groomed when she looks fresh, neat, clean, and well-pressed. This means a daily, and often twice daily, shower or bath, fresh underwear or stockings daily or twice daily, competent home or professional hairdressing at least once a week, well-manicured hands, no chipped nail polish, runless, wrinkleless stockings, and shined shoes at all times, even for housework. ”
(emphasis mine) From Amy Vanderbilt’s New Complete Book of Etiquette: The Guide to Gracious Living, published in 1967.