Go take a look at the dress pictured, before and after. This is possibly the best explanation I could ever give for “why tiny people should wear miniskirts after 40”. Not mini-minis, but skirts above the knee.
When I am at my proper weight, I’ll wear this length too. I’m 5’2″ – for those of us who are very short (5’4″ and south), wearing a longer skirt can look like playing dress up in Mommy’s clothes.
It’s not about sexy, it’s about proportion.