This movie is a social drama. Lindsay Lohan is "Cady Heron", not only does she fit the description, she just becomes the character heart and soul. And there could absolutely be no one else who could be Regina but Rachel McAdams. The casting is perfect, the sets are so realistic, and the story moves along; even though it is 96 min long, the movie just flies by. It is a classic, and should be seen by everyone who loves movies. This is the way movies were meant to be.