Jacket 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. Usually they are formed by folding over the front edges of the jacket or coat and sewing them to the collar, an extra piece of fabric around the back of the neck, as shown in the image.

There are three basic forms of lapels: notched, peaked and shawl. Notched lapels, the most common, are usually seen on business suits. Peaked lapels are more formal, and nearly always used on double breasted jackets or coats. Shawl lapels are usually carried by dinner jackets.

The notched lapel (American English), step lapel or step collar (British English) is sewn to the collar at an angle, creating a step effect. This is the standard on single breasted suits, and is used on nearly all suit jackets, blazers, and sports jackets. The size of the notch can vary, and a small notch is called fishmouth.

The peaked lapel (American English), double breasted style lapel or pointed lapel (British English), is the most formal, featuring on double-breasted jackets, and is now always worn with all formal coats such as a tailcoat or morning coat, and also commonly with a dinner jacket (both single and double breasted). In the late 1920s and 1930s, the single breasted peaked lapel jacket was considered a very stylish design. The feature was carried into day clothing by the increasing popularity of the peaked dinner jacket. This has gone in and out of vogue periodically, made popular once again during the 1970s by designers such as Armani, and is currently a trending style in the 2010s. The ability to properly cut peak lapels on a single-breasted suit is one of the most challenging tailoring tasks, even for very experienced tailors.

Ralph Lauren (born Ralph Lifshitz, October 14, 1939) is an American fashion designer and business executive; best known for his Polo Ralph Lauren clothing brand.

Ralph Lauren was born Ralph Lifshitz in the Bronx, New York, to Ashkenazi Jewish immigrants, from Pinsk, Belarus: Fraydl (née Kotlar) and Frank Lifshitz, a house painter.

Ralph attended the Salanter Academy Jewish Day School followed by MTA (now known as the Marsha Stern Talmudical Academy), before eventually graduating from DeWitt Clinton High School in 1957. In MTA Lauren was known by his classmates for selling ties to his fellow students. In a moment of spontaneity, when asked what he wanted to do in his Clinton yearbook he stated under his picture that he wanted to be a millionaire. During the summer, Ralph attended Camp Roosevelt (Monticello).

At the age of 16, Ralph's brother Jerry (who was his guardian) changed their last name to Lauren to avoid the unfortunate obscenity reference Lifshitz has in English (although Ralph's brother Lenny retained the name). Apparently Ralph was teased about it in school. “My given name has the word shit in it,” he told Oprah Winfrey. “When I was a kid, the other kids would make a lot of fun of me. It was a tough name. That's why I decided to change it. Then people said, "Did you change your name because you don't want to be Jewish?" I said, "Absolutely not. That's not what it's about. My cousins who lived in California had changed their last name to Lawrence. So I just thought, "I'm going to pick a nice last name"—it wasn't particularly connected to anything or anyone."