147: Although I haven’t gone through the sugya recently, I am pretty sure that most contemporary poskim hold that women wearing “womens” pants is not lo silbash. However, most of these same poskin hold that wearing pants is still assur because of Tznius problems. This is why many women will wear pants at a women’s gym, which has fewer tznius concerns.
I would hypothesis further that this is the reason that many MO women wear pants with a skirt over them.