We make mistakes all the time. Just ask our commenters (and thanks for helping us copy edit, guys, since we can't afford a copy editor--I mean it).
So it's sort of comforting that even the fashion bible messes up every once in a while. BuzzFeed pointed out that Vogue ran this correction (above) regarding Jonathan Van Meter's piece on Chelsea Clinton. And the easy thing to do would be to say, "Oh, of course Vogue would misidentify a deputy assistant secretary for the Bureau of Democracy, Human Rights, and Labor at the U.S. Department of State as an interior designer." But to be fair, Van Meter was depicting a scene in which Clinton was hanging out with a real interior designer, Ryan Lawson, as well as Dan Baer, and they were talking about interior design.
It's still funny though.