Black leggings may be an athleisure staple, but as Hailey Bieber and Kendall Jenner prove ... To top it all off, the model swept her hair up into a slicked-back bun and threw on her go-to pair ...

Kardashian arrived all dolled up in a white vintage Maison Margiela goat fur vest, skin-tight leather pants and black leather stiletto boots. She styled her hair in a low slicked-back bun and ...