Yoga Pants. Personally, I like them. They look like a
tailored fit on most people that wear them, and they're
very common out here.
Most waitresses and tellers wear them, as with the right
(for the situation) shirt and shoes, they can look very
dressy. Match them with a polo shirt and flats, and you'd
never realize that they weren't dress pants. They're also
"wash & wear" without the need for ironing, unlike most
dress clothing.
I'm told that they're also very, very comfortable. Beyond
that...yeah, they do look good on most folks as does any
well fitted clothing does.