Is it normal that i think about what i'd look like as a guy?

I'm an 18 year old girl. Sometimes I imagine what I'd look like as a guy. For example, if I go into a shop and see something nice, I'd think, "If I was a guy, I'd totally wear that!"

I'm gothicy, so I guess as a guy I'd have long hair, maybe a bit tall and have a bit of a beard and goatie going on.

Is this normal? Does anyone else do this?