Hailey Bieber bundles up as Kendall Jenner and Sara Sampaio flash taut midriffs heading to Pilates

Hailey Bieber rocks a black Matrix-inspired coat at a meeting in Beverly Hills

Hailey Bieber flashes her midriff in an unbuttoned blouse as she visits Justin Bieber at his studio

Hailey Bieber & Bella Hadid Kick Off Their Weekend with Pilates Class