A lapel is a folded flap of cloth on the front of a jacket or coat below the collar. It is most commonly found on formal clothing and suit jackets. Usually it is formed by folding over the front edge
A pinstriped suit with a notched lapel
Comparison of two notched lapel cuts: English (left) and Spanish (right). The former is the most commonly seen notched lapel.
Lapel watch, USA, c. 1889, Cooper–Hewitt, Smithsonian Design Museum
Lord Nelson in a Captain's tailcoat (1781), exhibiting a long, loosely-folded lapel with many buttons
A smoking jacket is an informal men's style of lounge jacket originally intended for tobacco smoking. Designed in the 1850s, a traditional smoking jacket has a shawl collar, turn-up cuffs, and is clos
Lapel
…tailoring tasks, even for very experienced tailors. The shawl lapel, shawl collar, or roll collar is a continuous curve. Originally seen on the Victorian smoking jacket, it is now most common on the dinner jacket or tuxedo. This similarly began as informal eveningwear, and was then made in both more and less formal…
A smoking jacket in burgundy with the typical shawl collar, frog fastening and turn-up cuffs. From the 1944 film Gaslight.
James FitzGerald (1818–1896) wearing a smoking jacket in 1868.
A smoking jacket from the 1860s exhibited at the Metropolitan Museum of Art, New York City, United States.
A silk smoking suit with shawl collar and gold facings from 1912.