I was interested in the comments regarding the difference between yoga pants and ponte pants. After some thought, I decided there is a difference in my mind.
My yoga pants are quite shapeless. They pull on and are very comfortable, but are really very unattractive. In contrast, my ponte pants, of which I have many, are sized correctly, have front zippers, belt loops. The fabrics are in interesting colors/patterns (not basic black). I coordinate the ponte pants with nicer tops (as opposed to oversized icky tee shirts). The fabric of the ponte is more substantial. It "feels" like I am wearing pants. Because it feels like I am wearing pants, I do wear them intentionally. I rarely wear my yoga pants in public settings because .... well, ick.
NOW if I were to find really nice fitting yoga pants, that could all change.