1. The mother and daughter duo exhibit a stark contrast in their physical appearances, with one being plump and the other thin.2. In terms of body shape, one is rotund and voluptuous, while the other is slender and delicate.3. It is possible to describe them using the phrase "round and thin," an idiom that captures the different forms of feminine beauty.4. "Round" connotes a full, curvaceous figure, while "thin" suggests a lithe and slender silhouette.5. The mother and daughter perfectly embody the rich connotations of this idiom, presenting a fascinating interplay of胖瘦 dynamics.6. Their varying body types create a distinctive aesthetic that stands out and captures attention.