Sister Halloween Costumes: Elsa and Anna From "Frozen"
What to wear: Elsa needs a flowing blue/green gown and a long blond braided wig. Anna wears a simple embroidered dress with a shirt underneath.
How to act: If you're Elsa, try not to touch anything around you — you might freeze it! Anna is sweet, and you should both break out in song whenever you feel the need.