PARIS — Ten a.m. on a frigid Monday morning, the first day of the couture shows, and Kylie Jenner was strutting through the marble halls of the Petit Palais trying to find her seat for Schiaparelli, shoehorned into spiky stilettos and a black velvet one-arm gown, a full-size tawny lion’s head jutting from the side. It was as if Aslan had taken a break from Narnia and stuck his muzzle through a time-space continuum under her armpit.