Cute messy bun hairstyles make excellent formal hairstyles. The trick is to make them an example of suitably organized chaos; that is, messy, but not too messy. There needs to be some sense of order.

You can get that order with partially messy hair. Carrie Underwood's evening hairstyle is neat at the front and half-way back, and the messy part has a decent profile and shape.

Carrie is wearing a very short designer micro mini evening dress. It doesn't get much more dramatic than this! It is her most bold fashion statement ever on the red carpet.

Carrie's hair style is good for prom but the dress is too short. It mostly looks very feminine, though, with lots of equally sized white decorations or appliques. Both the special dress and fancy hairdo look great from the back.