Whether it’s Meryl Streep’s casual California kitchen in It’s Complicated or Diane Keaton’s East Hampton Beach home in Something’s Gotta Give, the category of cozy late-’90s and early-aughts interiors is practically owned by movie director Nancy Meyers. In recent years, the look has re-entered the interior design zeitgeist in a serious way, a backlash against longstanding minimalism and the Marie Kondo method that had homemakers stripping down rooms to their bare essentials.