Girls can look normal and casual cross dressing in male clothes. But When a guy wears girl clothes, he looks ridiculous.
Most Helpful Girl
I've noticed this is a frequent question on GaG and quite evident in our society.
Before I answe your question I have to ask you something. What is the worst thing you can call a girl? A lot of names are probably coming into your head at the moment none of which I shall state in this message due to younger audiences. Now think of the worst thing you can call a guy. In most cases the names overlap with some exceptions.
A girl is shamed for being a girl, and the worst thing you can call a guy is a girl.
Now if society treats being a girl a bad thing, miraculously, people will see being a girl/feminine a bad thing. Of course this wouldn't be the case if there weren't stereotypes assigned to each gender such as "girls clothes" and "guys clothes" but it is what has been for centuries.
Now a girl is not going to be as severely harassed about wearing pants as a guy will for wearing a dress. Because the worst thing a girl can be is a girl and the worst thing a guy can be is well, a girl.
In France, women couldn't wear pants until 2013, in fact it was illegal to do so there. Lately quite a few feminist movements have been active and are trying to end this gap that involves these crude gender stereotypes.
If you want a bit more information of feminism I'd suggest checking out this website.
Hope this helps.
Most Helpful Guy