Gigi Hadid wears a feather mask and a shiny red skirt, while sister Bella falls open in a paint-splattered dress during Officer Luiz Mattos’ 50th birthday

Gigi was stunned to wear a feather mask, a satin pink tube top and a shimmery red skirt that clung to her figure as she went to the Boom Boom Room at New York’s Standard Hotel on Saturday.

Meanwhile, sister Bella showed off a hint of her bra in a paint splattered dress