And the way the sunlight plays upon her hair...
Quite why anyone would labour under the delusion that short hair plus extensions in any way resembles naturally long hair is beyond Lady Bracknell. On every occasion when she has been within viewing distance of a young woman with hair extensions herself, the difference in appearance between the young woman's own hair and whatever substance has been knotted into it has been very marked indeed.
"Celebrity" hairdressers will, of course, argue that their own work is of such a high standard of professionalism that the casual observer really cannot "see the join", and that we are surrounded by young women who have chosen their stylist with such care (and dedication to paying the highest possible prices) that their artificially lengthened locks are completely indistinguishable from the real thing.
Be that as it may*, Lady Bracknell remains vaguely nauseated by the prospect of having somebody else's hair welded onto her own. She is not in the habit of running her fingers through other ladies' hair, and would most assuredly have no inclination to do so in circumstances when it had been attached to her own head. Call Lady Bracknell old-fashioned, but she cannot see the difference between using other people’s fingernail clippings to create glamorous talons for oneself and using other people’s discarded hair to supplement one’s own crowning glory.
Issues of personal squeamishness and distaste aside, however, young women intent on purchasing extensions fashioned from human hair would do well to ask themselves whether the human hair in question has actually been voluntarily donated. If their consciences will allow them to contribute to a trade which results in women in third world countries having their hair forcibly hacked off, then Lady Bracknell would venture to suggest their internal moral compasses need to be significantly recalibrated.
*Afficionados of grammatical trivia may be interested to know that, “Be that as it may” and, “Long live the king/queen!” are believed to be the only two examples of the subjunctive mood in the English language.