Ms. Zabar, who has two employees, works out of her home, a 1953 Gregory Ain gem tucked in the hills near the Hollywood Bowl. She has art on the walls, including a pair of Guido Manerba crushed shell paintings and a framed needlepoint of a prehistoric-looking bird. A George Nelson sofa covered in pink-purple-orange Jack Lenor Larsen fabric sits in one corner of the cozy living room.

Racks of clothes take up almost all of the floor space. There are eight in the living room, holding some 1,500 pieces that range in price from $125 to $15,000. “I don’t want to just have rich clients,” Ms. Zabar said. “To me that would be a bit of a bummer.”