Lapels
Lapels are the folded flaps of cloth on the front of a jacket or coat and are most commonly found on formal clothing and suit jackets. Notched lapels, the most common, are usually seen on business suits, and on more casual jackets like blazers and sport coats.
There are three types of lapels you'll come across in the world of tailored clothing:
Peak Lapels
A peak lapel has a unique look that is suitable for anyone who'd like to achieve a slightly more dashing look. The peak lapel was wildly popular during the first half of the twentieth century; however, it's come roaring back into style lately. It is broad and V-shaped; as its name suggests, it points up like a peak not too far below the collar line. You should be able to tell at a glance whether or not this type of lapel is right for you.
Shawl Lapels
Anyone who wants to wear the most traditional black tuxedo possible should opt for the shawl lapel. This sleek lapel is easy to spot, since it boasts a smooth, rounded look that is completely different than the other popular options. People interchangeably refer to it as a shawl collar or a shawl lapel tuxedo, either term is correct to use. Choose a tux with this type of lapel when you're determined to achieve the most classic look possible. It's impossible to go wrong with a shawl collar, and tuxes that feature them are easy to find.
Notch Lapel
Finally, we come to the notch lapel. This style is frowned upon by traditionalists, who claim that it only belongs on a regular suit - not on a black tuxedo. However, it's becoming more and more popular on black tie formal wear, so you shouldn't feel out of place by selecting this option. Not surprisingly, a notch lapel is a lapel that has a notch in it. Many people find the look to be quite flattering. If you'd rather not deck yourself out in a totally classic look, notch lapel offer a stylish and sophisticated compromise.