Is wearing trousers forbidden, and does wearing them nullify the hijab?

Wearing trousers for women is impermissible unless three conditions are met: that they are worn under loose, covering clothes, that they do not resemble men's trousers, and that there is no intention of imitating the clothing of disbelieving women. As for wearing them independently and going out in them in streets and markets, it is not considered a hijab. However, it is permissible to wear them in front of the husband, subject to the second and third conditions.