Like Mikey said. Knee highs should be fine with proper kilt hose. If you need longer compression hose go for skin tone and don't worry about hiding your knees-----wear teh kilt and hose anyway. your health far outweighs a little bit of spandex showing between the top of your hose and the bottom of your kilt, and your mental health will definitely be aided also by the freedom of wearing the kilt.