The term 'Shirt Parts' refers to the components of a shirt, which include COLLARS, ARMS, and sleeves. COLLARS are the part of a shirt that encircles the neck and is usually made of a different material than the rest of the shirt. ARMS are the parts of a shirt that extend from the shoulder to the wrist. Sleeves are the parts of a shirt that cover the ARMS and are usually made of the same material as the rest of the shirt.