Even these children’s pattern illustrations from 1926 are a delight.
Delineator was a large format magazine (about 11 inches wide by 14 high), so I often have to show parts of the illustrations; a whole page would not fit easily on most computer screens (and would be slow to load!)
These two dresses are “for juniors and girls 8 to 15.” Notice the hemlines — just covering the bottom of the kneecap.
Within a year or 18 months, patterns for grown women show this length.
These adult patterns were available in two size ranges. Sizes “15 to 18 years” were for teens and small women, bust measures 32 to 35 inches. They were proportioned for women 5’4″ and under. The normal range of women’s sizes was sold by bust measure: 36 to 44 inches in this case. Short women with a 36 to 44 inch bust would have to alter their patterns. Here is Butterick’s advice for making a pattern fit a short woman, from 1926. Notice how important it is to alter the pattern in the torso, not just the hem. This would also apply to lengthening a 1920s’ pattern, so that the hip belt fell in the correct place. Perhaps this is why so many late 1920s’ photos show older women in long-ish dresses — rather than a sign of “the persistence of fashion,” as I often assume, it could be a sign of not knowing how to alter a dress pattern to fit a short, large body.
Lynn at AmericanAgeFashion (where that photo link leads) often explores the problems of fit on an aging body. Click here for her article about store-bought sizing in the twenties. [Edited 4/10/16 to add link to “Stylish Stout in the 1920s” at American Age Fashion.]