It seems to be a “thing” for pretty young blonde ditzes to wear these big black rimmed eyeglasses, as if that makes them “look smart.” Have they not noticed that Megyn Kelly gets away without wearing big glasses? Maybe ‘cause she really IS smart?
Here’s a Doctor Who minisode (about 7.5 minutes long) with the applicable line spoken by the 10th Doctor to the 5th.
“OH! And out they come, the brainy specs! You don’t really need them, you just think they make you look really clever!”
https://www.youtube.com/watch?v=S9nC0H1jMbc