Actually, believe it or not, I did read an article some years ago about really upper-class ladies that would tell anyone that jeans aren't appropriate for "ladies" to wear. And, I would suppose that there are ladies out there that would say "I don't have jeans at all". For some ladies, jeans are too "manly" looking.
Only if they're wearing mens jeans...
Ladies jeans are tailored in a different way to mens'...
Being short, I have always had great difficulty getting good-fitting jeans/pants. I generally wear leggings .. but not the skin-tight type.