Summary

Katy Perry's Upper Forehead Slope measures 10.3° and scores 9.4, placing it above its 7.0 to 9.0° ideal range. The upper forehead slopes backward from the rest of the forehead, and a more sloped upper forehead can make the upper face appear more feminine. Her value matches those of Khloé Kardashian (10.3°), Cardi B (10.4°) and Addison Rae (10.4°), and it sits higher than 65% of the women on the wiki, while only 20% of them measure inside the ideal range. At the extremes, Sadie Sink has the highest slope at 24.1° and Zendaya the lowest at 0.5°. For more context, see Katy's Browridge Inclination Angle, Katy's Nasofrontal Angle and Katy's full Harmony breakdown.