Hailey Bieber has legs for days in a VERY sexy black vinyl dress and sky-high heels for girls' night out in Santa Monica

Hailey Bieber tugs at the waist of her blue jeans to show off her VERY toned abs in a tiny white T-shirt

Hailey Bieber flashes her abs in a lime crop top and jeans as she heads to a meeting in Beverly Hills

Alessandra Ambrosio, 42, shows off her stunning physique in a black sports bra and pleated skirt during an outing in Santa Monica