When Kagome saw the dress, the first thing she tried was her powers of purification. It was a monstrosity, she was sure it was evil some way, yet the dress remained the same. Of course, it was an inanimate object, so really, the person she should've be trying to purify was the school Principal.
No. Perhaps the conspiracy lay deeper?
Regardless, the garment made her seriously consider enrolling in Lobelia instead, never mind she had (or rather, Sesshomaru had with her money) paid the tuition. She also considered wearing the boys' uniform and living her high school career as a male.
It couldn't be that hard.
But then again, living a lie would not be a good way to start her new life. Even if her mother probably wouldn't mind, and Shouta would get a kick out of it.
And besides, what kind of crazy person spent all day cross dressing to get out of wearing a stupid dress.
In fact, using all of her new 'high schooler' personality, Kagome found she quite liked the petticoats. It was the obnoxious yellow colour that got on her nerves, and hurt her eyes. Besides, it clashed with her moon.