I need help on this movie.?

okay so this girl she is like made fun of because of this other popular girl. the popular girl is like ewww your hair is so ugly so she come to school with like her hair all cut off and then the popular girl invites her to this party that doesnt really exist and then over doses on pills and is in the hospital for a while its such a good movie and i really want help. thanks so much for everything you can do!