A shawl lapel suit is a formal suit with a shawl lapel, which is a smooth, rounded lapel that lacks any notches or peaks. This style of lapel is often seen on tuxedos and is considered to be elegant and sophisticated. A shawl lapel suit is a popular choice for formal events, weddings, and black-tie affairs. It can come in a variety of colors and fabrics, but is typically tailored to fit well and give a sleek, streamlined look.