I saw this video at Internet Archive. It is a Singer advertisement shown at movie theaters prior to WW II. The "can-do" attitude really struck me. Apparently no one had a problem with the assumption that teen-age girls could make ballgowns at that time in history. Today, I encounter so many people who say, "Oh, I couldn't make that." They are not even willing to try. The girls in the video also saw sewing as a way to save money. During my recent gown shopping trip with my friend, the girls were more than willing to spend hundreds for poorly made gowns made from fabric that would be miserable to wear.
I long for the days when there was a store in every neighborhood where young girls could go learn to sew and whip up a ballgown to wear to the big dance.