When I was in fifth grade, my dad did a lot of historical reenactment (like SCA). Him and his buddies would go to ren faires dressed as winged hussars and do demonstrations about Poland during the middle ages.
One time, my dad took me with him and he didn't tell his friends, so the only costume they had for me was chain mail. Full chain mail. A lot of people thought I was a boy because my long hair was covered.