Behold... the Trending Haircut for 2021The shag or “shaggy” haircut is definitely not a new thing. It was all the rage back in the 70s along with leather jackets and the punk rock movement. This style was popular because of its effortless, messy look that fit perfectly with the vibe of the era. The 70s shag consisted of very short, severe layers that gradually got longer and thinner at the ends. T …