Magnificent Restaurant of the Blue Train at the Gare de Lyon in Paris
Someone in the Black Fae Day group was looking to participate, but didn't really have any ideas because they were more heavily into science fiction than fantasy stuff, so I offered a quote to inspire them:
"Any sufficiently advanced technology is indistinguishable from magic."
Of course that got me thinking (partially because I wanted to remember to look up examples, and partially because the quote inspired me also and I like to experiment) and the first thing that came to me was science fiction movie costume design.
If you tweak the idea a little towards costuming, you get: "Any sufficiently fashion-forward alien race is indistinguishable from the fae."
I like this. I've never seen anyone say it, but it feels right.