>>279585708
In the manga her miniskirt is worn high up to deliberately accentuate and show off her ass, and she's wearing an extremely high cut thong bodysuit.

In the anime her miniskirt is worn low to cover her ass, she's wearing tights, and the bodysuit is now more modest, covering most of her ass.

It changes the costume from "Overtly scandalous" to "Quite tame". Which deletes a major part of her characterization.