Since were looking back at the '70s, here's an amended re-post of a prior braces memory.
Here's Annabel Andrews from the 1976 Disney movie "Freaky Friday," about to get her braces off. (She's played by a young Jodie Foster, and the braces were actually just a movie prop... but still.) She hates them and wants them off.
Her braces get quite a bit of attention in the movie. First, some '70s era school dude asks about them.
Then, her little brother thinks she looks beautiful in them. And he wants some braces for himself as well!