Comme il faut

"Georgiana, put on your blue muslin, and ask Fanchette to make your hair a little comme-il-faut; and pray try to look well and cheerful; you were not up late, and ought to appear the better for it."

2007: Talking during performances is perfectly comme il faut in Wharton – why else go to a show if not to talk to one’s friends? – so while Miss Shaw, up to her bosom in dirt, went on about existence, I asked my female companion for advice. — Deborah Friedell, ‘Short Cuts’, London Review of Books 29:5