Where does one buy a housecoat nowadays?

mossygreen thought this was worth mentioning said
6

I drive a 95-year-old woman on errands. She would like some new nightgowns/housecoats/shirtwaist-style dresses. They have to open in the front and have easy fastenings. This style is not in fashion at the moment. We’ve gone to a couple of department stores and Target, everything’s over-the-head or basically a robe. If Sears, JC Penney’s or Montgomery Ward were still open, I’m sure they’d have an elderly woman comfort wear department, but they’re all out of business. She doesn’t want to order online or buy used. Any suggestions?