I haven't read Wittgenstein so I don't get the joke: what does Carmen Miranda have to do with him?

He loved movies, especially American musicals. You knew you were one of his favored students if he invited you to come to "a flick" with him after his lectures, which he generally left in a state of agitation and despair—he would buy a pork pie on the way, plunk himself down in the front row and watch until his head cleared. I believe he also liked Westerns. But his favorite actresses were Carmen Miranda and Betty Hutton.