One of the big ways to make people look scary is with unusual lighting, especially with light from below the face. This is why people hold a flashlight upside down on their face when telling ghost stories. The unfamiliar shadows trick the brain into thinking certain features look sunken. You can use this to your advantage if you're going out where it's dark.
If you're handy, get a round frosted globe that's designed to go over light fixtures (you can get this for around $5-10 at a home center) and (if you don't have one) a small LED battery flashlight. Build a small base for the globe (I like using foam) and stick the light through so it lights up the globe. You now have a "fortune telling" crystal ball (which already makes you kind of supernatural and scary), and if you hold it below your chin it will make you look really sinister.
a girl(very scary)
You can find a halloween costume for a girl just about anywhere a few places to look would be walmart, miejer, walgreens or halloween express.
Just wear nothing and put on a mask.
A good Halloween costume for a teenage girl would be: a dead fairy or a zombie cheerleader mostly anything sorta dead that is so kewl. For a boy: Scream or anything scary. Remember you can trick or treat at any age your never to young for all the fantastic candy!
The popularest girls Halloween costume is the goth zombie prom queen.
If I were 13yrs old, i would wanted to wear a bloody princess.. well I'm a princess still and that wud be scary ..
The girl costume which come on skats in the 1950Ç_s was Pattern Majorette Ice Skate Costume. One can buy it from eBay, Costume Super Center, Halloween Costume, Costume Craze and many more.
Judging by the internet it's "a girl."
Judging from the responses here, the most popular boy costume was "girl"
there is no code i have the supergirl outfit and u get it from Halloween
Go for a preepy school girl it easy and fun!
little red riding hood is a nice idea, but if u want it to be more scary, make wolf claws across teh face :) Another good one is a boy :P