On the day we meet, she wears a linen tweed trenchcoat and red lipstick in a shade not dissimilar to the one Fleabag wears with such aplomb and regularity that the Hairpin tracked down the show’s makeup artist to find out just what products created the look. (For the record: “a blend of oils, waxes, and pigments,” based on a M.A.C color called Dare You.)