I think it is all according to how old they are and what they look like. Personally there are cases where I prefer they wear pants, cases where I prefer a VERY short skirt, a LONG skirt, and in most cases I prefer they wear NOTHING !!!!
JOKING..... I think it is not for me to decide, however if I were a female I would wear pants most of the time. I would wear a skirt or dress to church or to formal events. I would be very choosy with pant suits, most of them look manly and are downright creepy looking.