If you have "Game of Thrones"-long hair, you want to break it up with long layers so it doesn't look flat or weighed down. Ask your stylist to undercut your layers. "Undercutting is a huge avant-garde technique, cutting short, thin layers underneath long layers so they are hidden but give hair volume and movement," explains Scalia.
The model-turned-actress' layered haircut is the ultimate "It" girl hairstyle.