The shag haircut, which we can thank '70s icons like Farrah Fawcett and Joan Jett for, gives you a little more edge to a classic layered look while also giving your hair natural volume. There's no need to wonder if you can pull off this style because it works for every single type of hair texture and every face shape. Long shag haircuts make layered hair just that much more fun. We've rounded up some hair inspo to show you. Click through to see how some of our favorite celebs are killing it in this haircut.