This isn't just a winter-specific trend, as Bieber herself proved when she and Justin Bieber renewed their vows last summer. In a video of the ceremony shared to Instagram, which also served as the couple's pregnancy announcement, Hailey wears a lace head scarf tied under her chin like she's a ‘60s movie star.

Bieber made the dash through Union Square in a functional yet fashionable fit. She kept to neutral tones and some signature pieces, wearing an oversized beige trench and matching low-rise suit trousers,