Short black skater skirt with pantyhose, long flare jeans, long flare yoga pants, palazzo pants, maxi skirt. All would work.

I think a multicolored mini skirt would look great! Sandals or ankle length black boots for shoes.

You could style this on multiple ways. I think anything high waisted would look amazing with this top! For example, maybe a patterned maxi skirt which would add texture to the outfit as this top is pretty plain. If you want to be more casual, I would suggest you to wear high waisted jeans or high waisted shorts. Just experiment with it and see what you like the best.