When did the episode titled "The Fashion Show" air for the first time?
CREATE TABLE "table1_19236587_4" (
  "series_no" real,
  "season_no" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "u_k_viewers_million" text
);
SELECT "original_air_date" FROM "table1_19236587_4" WHERE "title"='\"The Fashion Show\"';