What is the ruling on a woman wearing trousers with a shirt reaching her knees over them? Is it a condition that the trousers be wide? What is the evidence for specifying the length of the shirt to the knees and not otherwise?

Our fatwas are very clear, and we summarize them and make them even clearer: There is no objection to a wife wearing trousers in front of her husband, but it is not permissible for her to wear them and go out in them, unless they are worn under concealing clothes.