Best Prom hair for long and thick hair? By zara | October 14, 2009 - 6:53 am |October 14, 2009 What will you look like? I have long hair (about mid-back or a little longer) its pretty thick. I’ve got a few layers in it. My hair is brown with blonde highlights all through it. I want a prom updo or half updo but i cant find any good pictures. Help Please! Tagged blonde highlights, long hair, mid back, prom updo. Bookmark the permalink.