I understand the position of the OP
As a frum young woman, I always try to be tznius to the best of my ability. I do not wear tight, flashy clothing, and I am sensitive that my skirts should always cover my knees.
However, with the current style of straight skirts, I find it very hard to keep my knees fully covered when entering or exiting a car. And most of my skirts are 4 inches below my knees. When I am wearing a flairy skirt, I have no problems.
Does anyone have any tips on how to keep tznius when wearing a straight skirt? Please do not answer not to wear a straight skirt or not to travel in cars. I would like some PRACTICAL advice!