Catwalk describes a narrow, usually elevated platform used by models to demonstrate clothing and accessories during a fashion show. The term probably derived from catwalks that connect adjacent buildings. The term may also be derived from a more literal meaning, as models on the catwalk often use a walk which is exactly like that of a cat, placing one foot directly in front of the other to produce an alluring swagger in which the hips take on a more exaggerated movement. In fashion jargon, "what's on the catwalk" or similar phrasing can refer to whatever is new and popular in fashion. A catwalk is also known as a runway, especially when it is not elevated. This form has been used in such instances as the title of the television series Project Runway.