That's the name of the actress, only playing a role. No way to know what she's like in real life. So her name wouldn't work as an epithet describe someone who acts clueless but is actually very intelligent.
How does one coin a term for someone like that? A brainiac in bimbette guise?
This post was edited by inky at July 23, 2020 6:10 PM MDT
(And didn't they make a Broadway musical of that movie? - and a musical sequel to the musical, too, maybe? -- If they think that movie is good candidate for a musical, I'm going to make a musical version of "Night of the Living Dead.")
And I haven't checked but I almost suspect someone out there probably already did. :)