Whether you look to Jane Birkin in the '60s or Bella Hadid and Kaia Gerber today, baker boy caps have serious style credentials. Eugenia Kim's 'Marina' version is made from tonal-gray, black and cream cotton-blend bouclé with flecks of shimmering silver. It's fitted with an internal browband for comfort and finished with a gunmetal chain across the front, rather than traditional frogging.