Harley Quinn is a staple for Halloween. She has a very unique hairstyle that many girls like to recreate for Halloween. You need red and blue spray hair dye, two pony tails, a teasing brush, and a curling iron. First you are going to curl your hair into beach waves. Then you are going to take the teasing brush and tease the top part of your hair. You do this by taking the top layer of the hair and brushing the opposite way to make the top of your hair bigger. Then take the pony tails and split your hair in half. Make pigtails that sit on the top of…