PARIS — The Givenchy invitation arrived with a knotted black leather kerchief, a highly suggestive item which was complemented by the set of the show, a shadowy film noir hall of mirrors, and a first look which presented a woman in a dark suit and white shirt, dressed for Raymond Chandler’s mean streets. So far, so noir. Then came the second look, a simple black velvet sheath slashed high on the thigh, the model sporting what looked like a wimple, except that it was actually hatter…

