Leather bomber jackets are to Hailey Bieber what house slippers in public ... She wore a two-tone baseball cap with athletic shorts, which she styled with her favorite footwear: her black Jil ...

Hailey was pictured driving an electric vehicle at the music festival as her musician husband sat in the back of the cart BACKGRID Justin and Hailey Bieber ... dress and black baseball cap ...

Last night, Kendall Jenner and Hailey Bieber linked up at Sushi Park ... and a Mercedes-Benz baseball cap. Jenner, meanwhile, stayed loyal to her usual model-off-duty style.