Cacoon style is huge this year! (Look on jcrew or jcrew factory) or a camel colored coat with a front tie is also really big for this winter season.
I'm totally into the princess themes (girly girl!). I would go as Elsa or Cinderella!
I have one that says "oh la la" in a really pretty cursive print and I love pairing it with a big statement necklace!
I think it's wonderful they work in an industry that allows them to color their hair purple. Although most of us don't, I think hair chalk is fun for the weekend when you want to add a little fun color to your hair but it can be washed out by Monday morning!
I would wear flowly maxis, oversized tunics and sweaters, boyfriend jeans and an oversized top.