Before watching the movie:
I’m fairly certain there were girls’ clique stories before Mean Girls, and of course many more after and because of it. So my impression is that this is extremely generic. But that’s probably unfair. Especially because of the influence this has had on the ten years since. And there’s always room for the writing to rise above a generic story type. I know there are a handful of lines that have become memetic.
This is also likely the most in-depth look at the girls’ clique trope. I seem to recall an idea that this is nearly anthropological in its study of catty high school girls, but that may be an argument beyond the depth of this blog.