Since the 1960s, many studies have assessed the attractiveness of women’s breasts, notably regarding the size. One early contribution by Jerry Wiggins and colleagues (1968) tested men’s preferences for breasts, buttocks, and legs using simple, nude female silhouettes.

Ninety-five male undergraduates rated paired images with different sizes of those body regions. The main aim was to identify personality traits associated with preferences, but some interesting baseline information emerged.