While these vintage patterns rarely sell for hundreds of dollars, uncut patterns can be worth about $20 to $70. A 1930s Vogue Special Design pattern for a draped, knee-length dress sold for $70.

$39.99 at dsw.com Nellie Polka Dot Maxi Dress This dress will be a hit at your next happy hour, guaranteed. Plus, it has a little tie in the back to create an adjustable fit around the waist.

A product of the pre-fast-fashion era, Annie Mollison has been pattern-making and sewing since her mother taught her how to construct garments as a child. After years working away at her home sewing ...