Cecil Beaton often photographed the elegant and the glamorous whilst gazing over a shoulder into a mirror. There seems to be an indication that their beauty was simply too much for a single image ... . . or was it an acknowledgment that we should all take a moment to reflect occasionally ?
Whatever the intention - He seems to have captured Gertrude Lawrence in a reflective questioning moment.
My simple answer to that question. Yes, Gertrude, you look divine.