and his look was as popular as his sound. As he performed such hits as "Jailhouse Rock," "Hound Dog," "Heartbreak Hotel," and "All Shook Up," Elvis swiveled his hips and wore wide-shouldered jackets and loose, lightweight slacks that moved with him. He radiated rock 'n' roll style and attitude with his ducktail, a favorite hairstyle of the time that he made popular, sideburns, and mock-surliness.