Brought myself some very expensive knee high boots a few years ago they still look brand new but on one knee they always slide down. no matter how tight I tie them. I’ve tried stick on velcro garter strap things and they do half work but if I wear tights the velcro catches. As there leather could I get them cut and Sewn smaller around the top. Or does anyone have any other suggestions. I’ve gained and lost weight a bit so they did stay when I had bigger legs any suggestions would be great.