I don't know, but I'm over 40 and don't think bare legs look out of place. I cannot remember the last time I wore nylons, but it would be quite a few years ago. I was in a wedding party 2 summers ago and the bride didn't want any of us wearing nylons for her mermaid themed wedding - she bought us all aqua fishets. The dresses were floor-length, so it didn't really matter, but she wanted a picture with all the bridesmaids hiking our skirts up to our knees and showing the fishnets. The bride was 28 at the time. I'm not lookin' at the legs.