Which body parts drive the most engagement on social media? I synthesized eye-tracking studies, preference surveys, content analyses, and practitioner data across TikTok, Instagram, X, and YouTube to find out. The research reveals a tentative hierarchy: gluteal presentation appears to generate superior engagement based on objectification frequency analyses (77% of women’s fitspiration content on TikTok), preference survey data (59% preference over breasts in direct comparison), and practitioner-reported observations. Legs function as a secondary driver, receiving 60% preference over breasts in binary comparisons. Breast presentation demonstrates more variable and context-dependent patterns—preferences shift based on viewing angle, hunger state, socioeconomic status, and cultural background in ways not observed for other anatomical categories.