Generally, womens pants are smaller on the top, widen out at the hips and then are skinny again in the legs. Trying to get that small waist area over your hips can require a bit of a wiggle. Never mind the fact that our bodies are constantly in flux, unlike men. We’re constantly retaining or shedding water, pant never fit the same on Tuesday as they did on Sunday. :-/
Hope that helps. :)