Kiyah, Bershan, Chenoa and Tiffany have known each other for more than ten years, and are constant sources of inspiration, support, competition and companionship to one another. Kiyah, an ambitious and successful celebrity hair stylist, is the link who brought the four friends together, and New York City's legendary Harlem neighborhood is where the quartet come together on a regular basis ... over drinks, lunches, dinners, you name it. Two are married, two are single, and…