Meh, much ado about nothing.
I agree with Mommy Penguin that this whole story sounds like a contrived re-make of a Pretty Woman scene.
I understand that high end stores don't want their merchandise pawed by people who have no intention of buying it. Skin oils can mar exotics. I also understand that high end stores always employ sales clerks who speak English and are trained to be overly solicitous. I also don't think that everyone in the universe has to recognize Oprah. I'm sure this sales person believes she was doing her job. Her job is to sell and protect the merchandise.
Nothing wrong with being an elite. If there is, then why strive to be better? What if you actually make it to the top? I don't begrudge Oprah a dime she has made.
Speaking of which, couldn't Oprah have sent an assistant who speaks fluent Hermes?
Back to the original statement, much ado about nothing.