For someone whose work exudes luxury and chic, the New York designer Alex Papachristidis is decidedly down-to-earth. He calls everyone, from his clients to his housekeeper, “darling” and “sweetheart.” Family, friends, civility and beauty are the gods in his personal pantheon. Although his clientele tends toward the extremely, if discreetly, wealthy, Papachristidis has no airs […]