A bob haircut is a short hairstyle, usually worn by women. Bobbed hair is cut off straight, without layers, at about the level of the jaw. There are many variations of the classic bob hairstyle, including the long bob and the asymmetrical bob.
Historically, the bob has drifted in and out of style. Bobbed hair entered the mainstream in the United States and most of western Europe around the mid-1910s, and by the 1920s it was one of the dominant hairstyles for women in the West. In the 1960s, a simple angular bob became fashionable, and this style has remained the model for most subsequent bob styles.