The Peter Pan collar is a flat, rounded collar that is typically attached to the neckline of a garment. It is named after the character Peter Pan from J.M. Barrie's play, who is often depicted wearing a similar style. This collar is commonly found on dresses, blouses, and children's clothing, giving a playful and youthful appearance. Originally popular in the early 20th century, the Peter Pan collar has made a comeback in modern fashion. It can be made from various materials, including cotton, lace, and silk, and is often embellished with embroidery or contrasting colors to enhance its charm.