From Hot to Nerds

[Sutibaru]

In most cases, it is Hot Girl/Guy to Hot 'Nerd'.
It's usually not the case of a girl growing pimples all over her face or gaining braces or something else that is seen as unattractive that's associated with the general depiction of a nerd. I do like the idea of reverse bimbofication as say a bimbo is suddenly embarrassed by how much cleavage she is showing, tries to tug and fix her top to hide her large bosom, try to buy a more conservative outfit and pull her hair back into a bun.