Summary

Sydney Harper's Holdaway H Line, which measures her lower lip and chin harmony in profile, sits at -2.93mm, inside its ideal range of -3.00 to -1.60mm, and scores 10.0. That places her higher than 5% of the women on the wiki, and 20% of them measure inside the same range. Among the closest matches are Loli Bahia at -2.90mm, Serena Williams at -2.85mm and Nayeon (TWICE) at -2.83mm. At the far ends, Barbara Palvin records the highest value at 1.88mm and Adéla Jergová the lowest at -6.30mm. For context, see Sydney's Lower Lip Burstone Line and Sydney's Upper Lip S-Line Position, or her full Harmony breakdown.