Read full articleElleHow Old Were Kendall Jenner, Gigi Hadid, and More Balmain Models When the Backstreet Boys Were Big?ElleOctober 22, 2015 at 2:23 AMLink CopiedKylie Jenner (Right)NEGATIVE ONE YEAR OLD BECAUSE SHE HADN'T EVEN BEEN BORN YET. (Media Platforms Design Team)Because—spoiler!—Kendall was 1. View comments