In a country where the weather is usually warm to hot, you would have lots of questions and maybe staring at a woman who's always dressed in long sleeves. You didn't exactly judge her, but you might have branded her as a wacko, weird, or you would even think maybe there is something wrong with her arms..:)

Or when you see a man swimming in long slacks, for some reason.

None of the above has anything to do with religion, it's cultural.

Salam