1 The seminal work on the waist-to-hip ratio is “Adaptive Significance of Female Physical Attractiveness: Role of Waist-to-Hip Ratio,” Journal of Personality and Social Psychology, 1993, vol. 65, p. 293–307; and “Female Judgment of Male Attractiveness and Desirability for Relationships: Role of Waist-to-Hip Ratio and Financial Status,” Journal of Personality and Social Psychology, 1995, vol. 69, p. 1089–1101, both by Devendra Singh.

2 While preferences for particular features like body weight or breast size have changed over time, the preferred waist-to-hip ratios have remained stable. For example, in analyzing the measurements of Playboy centerfolds since the 1950s and Miss America winners since the 1920s, researchers discovered that the waist-to-hip ...

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