Half Up Half Down Hairstyles. Stylish looks and hair gallery of half up half down hairstyles. Ever had trouble deciding if you wanted to wear your hair up or down? If you have then you can get the best of both worlds with a simple half up half down hairstyle. This hairstyle works for all face shapes, and on almost all hair lengths. It can be worn to formal events, as an everyday style or for a hot date. Add bangs in the front for a more sultry feel and create a style that truly works for you. Look below at the celebrities who love the look of the half up half down hairstyle.