In the wake of the 40th anniversary of her iconic wrap dress, Diane von Furstenberg seems keen to keep riffing on her origin story. She called her show Fortvna, after the Roman goddess of luck and the subject of the first painting Von Furstenberg ever bought. “She redefines beauty and paints her own destiny,” the program notes read. Fortvna’s curriculum vitae sounds a bit like DVF’s own. The models, for their part, wore their hair in waves with a fresh bloom tucked behind one ear, the way Von Furstenberg did in her younger days. Self-promotion is smart business—the entrepreneurial Von…