Did Dakota Fanning play in the roommate?

Dakota Fanning did not play in the movie "The Roommate".

The main cast of "The Roommate" included:

* Minka Kelly as Sara Matthews

* Leighton Meester as Rebecca Evans

* Cam Gigandet as Jason

* Aly Michalka as Tracy

* Danneel Harris as Mari

Perhaps you are thinking of another movie?