Gyaru
In english it is "gal" but becouse japanese cannot say it well, it is changed to Gyaru. A japanese dream girl is dark hair, light skin, elegant and quiet. A gyaru style was to be not at all like it. It is ligh hair, dark skin, light make-up and a wild attitude. Gyaru can be find the most is from Shibuya 109, a shopping-centre in Shibuya. Because in 109 there is many shops for gyaru to shop. A guyaru likes to show a lot skin, therefore short pants, short skirts and other is usually wear.
A gyuary usually wears gyaru-brands (like LIPSERVICE, JSG..etc).
There is a magazine to gyaru called egg. The models in it are very famous in Japan.
Manba
It is related to gyaru-style. It is oerdoing ganguro-style. A more dark skin, a more light make-up. Manba usually wears gyaru-brands but can use kigurumi too. This style is now not popular in Japan.
Kogal
It is like gyaru but uses high school clothes. blond hair, dark skin, short high school skirt, loose socks.
I hope it was learned. ^o^V