Summary

Where Kate Moss's mouth is the narrowest on the wiki at 0.67x, Katy Perry's Interpupillary-Mouth Width Ratio sits at 0.83x, scoring 9.4 and placing her above its ideal range of 0.75 to 0.79x. The ratio compares mouth width with interpupillary distance, with the ideal set at a mouth slightly narrower than eye spacing for facial harmony. At the other end, Freya Skye reaches 0.97x, the highest value on the wiki. Alessandra Ambrosio, Anne Hathaway and Bonnie Blue share her exact 0.83x, and 75% of the women on the wiki measure lower. For more of her face, see Katy's Cupid's Bow Depth or her Katy's full Harmony breakdown.