Mean Girls represents Hilly, as well as her little controlled posse in the league. Lindsay Lohan in this portrays Skeeter because she eventually finds who she is and who she wants to be. Hilly represents Rachel McAdams because she's the leader of the pack and influences so many people. She is also a flat out brat.
I never watched this show, but as mothers day is coming up, seeing this made me realize that this was true for me too. my mother is the person i looked up to growing up, and the person i most wanted to be like. and im not sure she ever knew that. I still look up to her to this day :) everyday i say or do something that makes me think " Jeez, that sounded just like my mother..." and i have to smile :)