boutique

noun4

1. •
   A small shop, especially one that sells fashionable clothes, jewelry and the like.
2. •
   A small shop located within a larger one.
3. •
   A film production company making only a few movies per year.
4. •
   [before a noun] Any company that has an exclusively smaller client base generally in a niche market or specializing in bespoke or custom-made products or services.

   • To keep attracting clients, the law firm of the future just might turn into a legal boutique, says Earle Yaffa, the managing director […] — 1982