What feature defines an hourglass body shape?

An hourglass body shape is distinctly characterized by having wider hips and a larger bust, complemented by a well-defined waist. This silhouette creates an elegant and balanced figure, where the measurements of the bust and hips are proportionate, while the waist is noticeably narrower. This shape is often celebrated in fashion as it represents a curvaceous form that can be accentuated with various styles and tailoring techniques, making it a popular choice for many types of clothing designs.

The other options describe different body shapes, such as a rectangular shape which may have equal width in shoulders and hips, or a pear shape where hips are wider than the bust. The description of narrow shoulders and narrow hips does not align with the hourglass figure. Hence, option A accurately encapsulates the essence of an hourglass body shape, highlighting its defining features.