Loving these combinations of flirty styles with a frontier-woman look. It has something to do with the blousy, feminine shapes and fabrics meeting touches of worn leather and fringe... and a really broad mix of materials in each outfit.
I'm especially liking the way over-the-knee stockings are looking with knee-high boots. One thing about over the knee's though, is that in my personal opinion, it's better to go with something that has lycra throughout - not just a band of elastic at the top. This prevents the dreaded (and all-too-common) Rubber Band Leg.
Also, in my opinion, if this is to be a trend for fall... a slightly taller, woolier stocking, in neutral or apple red, worn in a slouchy fashion, under the boot but over the knee, is the way to go. Not to get too specific or anything!! haha.