I got my wife and daughters these:
Buy the Backcountry Wolverine Cirque 3/4 Insulated Pant - Women's online or shop all Clothing from Backcountry.com.
www.backcountry.com
Fit is good, not too tight in the thighs.
These are similar to the Arcteryx Axino and Patagonia Nano-Air (which I don’t think comes in 3/4): active insulation with a soft, matte, stretchy face fabric. Meaning they will stretch a bit, and they move moisture if you are active. They also are a bit more comfortable for lounging.
I have the Swix pants, similar to the Helly Hansen above, with traditional high loft synthetic insulation and downproof face fabric. Thin strips of stretch fleece.
More windproof, but less breathable. Still fine for resort skiing.
I love the full side zips for this. Start in a cold moring, and as the day warms up, you can reach through your shell pants zippers, undo the insulation pants, and pull them up and out, without dropping your shell pants around your knees.