Reply To: Tznius Support Group

Most Poskim or LORs (local orthodox rabbis) hold that BECAUSE when a girl sits, her skirt may go up, the skirt should ideally reach 4 inches below the knee.

this is also for a girl who is getting into or out of a car, as this can be very untznius.

being as most ppl dont stand the entire day, and theyre likely to sit a lot, this is why skirts should be 4 inches below the knee, even when standing.

you can check up the details in a little book called “Hee Tishallel A Practical Guide to Tznius” by Rabbi Forcheimer

hope this helped