Trending Mens Hairstyles 2021 Mullet / The mullet haircut became wildly popular in the '80s, with the advent of rock and roll into the mainstream. We have a variety of mens hairstyles in short, medium and long lengths, and in different hair textures and categories. Mens Hairstyles 2021 Mullet / 65 best haircuts and hairstyles for men in 2021.