This pale yellow shop is decorated with Klee and Kandinsky posters. A tornado of French chic, co-owner Nadia Serraf darts here and there, mixing and matching suits and shirts, as she shows how she can leverage a customer’s wardrobe for maximum variety and versatility. A number of powder blue shirts, she points out, would go equally well with a Calvin Klein blazer ($525) and a variety of dress pants ($149–$225), or a tone-on-tone black striped suit, available from the in-house Tendanza line for $575, or in a slightly different cut and Cerutti fabric (from $850). Change the combo and you change the effect. No slave to fashion, Serraf stocks the trends—two-button jackets, flat-front pants—but also tries to accommodate customer pleas for, say, a more forgiving pleated pant. The store carries Italian silk ties ($99), Camicia cotton shirts (Italian designed, Turkish made, $159), jeans by Horst ($139) and ultra-comfortable shoes by Ecco. Tax included.