Apparel sizes refer to the standardized measurements used to categorize clothing for different body types. These sizes typically include labels such as small, medium, large, and numerical sizes like 0-16 for women or 28-40 for men. Each brand may have its own sizing chart, which can lead to variations in fit. Understanding apparel sizes is important for selecting the right clothing. Many retailers provide size guides that include measurements for chest, waist, and hip to help customers find their best fit. Additionally, some brands offer plus sizes or petite sizes to accommodate a wider range of body shapes.