In the UK, a size 18 typically corresponds to a bust measurement of 44 inches, a waist measurement of 36 inches, and hip measurement of 46 inches. This size is often considered part of the plus-size range in women's clothing, which caters to a variety of body shapes and sizes. Clothing labeled as size 18 may vary slightly between different brands and styles. It is important for shoppers to refer to specific size charts provided by retailers to ensure the best fit. Many stores offer a range of options in this size, including casual wear, formal attire, and activewear.