I recently discovered this mysterious and quite magical shop in Istanbul. It looked like an interior shop from the outside, but it is actually an atelier. The door was opened by a lovely lady with a King Charles cavalier spaniel, and I walked through to see elegant room after elegant room. In one a strikingly glamorous lady was sitting surrounded by elegant silverware and sipping tea from a china cup. I felt like I'd walked into Poirot! It turned out that this was the shop of Nihan Buruk, a supermodel from the 90s who went on to become a fashion designer. Above she models some of her clothing.
Each room was elegantly decorated with sumptuous fin-de-siecle antiques. There is a video showing a tour of the atelier here (definitely worth a visit).