The shag haircut has made its well-deserved comeback over the last year, and we've seen it show up in a handful of variations including the curly shag. "The two popular shag styles are the ultra curly, ultra layered and then straight with long curtain bangs that sweep," Toth said. "The curly shag is very round with a pure release of texture. It will be a seamless transition from bangs to short layers to long layers to bottom length."