You can get leggings now with a little skirt at the top. At first I thought it was simply an odd sort of fashion thing but the skirt does prevent the dreaded 'camel toe' effect and also what my mother used to call ' like two boys fighting in a sack' i.e. large, unrestricted buttocks seen through well stretched leggings.
Sadly, the world has changed since my friends and I turned cartwheels and did handstands against the playground wall. Nobody turned a hair back then. We tucked our skirts into our knickers legs and we probably did it up to age 11 years! We were still children at that age, unlike today's girls. The internet and camera phones and messaging apps have turned girls into commodities whose ill-advised pictures, often demanded by so called boyfriends, do the rounds of groups of boys. Appearance and fashion is a relentless pressure for many little girls, starting so young. It says "look at me"... I don't think it started for my cohort, back in the sixties until we were well into our teens.
So, I think modesty shorts might be a good idea, although rather sad. If you've ever watched the TV programmes about the emergency services picking up scantily clad, drunken girls from the gutter, you might agree that a little modesty would go a long way these days. ?