The Hills actress Stephanie Pratt says she won't return to the reality show after this season.

Pratt denied that she is leaving the reality show due to the drama with Kristin Cavallari, the new cast member.

I don't know how much more I can take of 'The Hills.' It is very brutal...It's not because of Kristin. I was going to stay and see what happens after these 10 episodes, but I just don't think I can stand 'The Hills' anymore, Pratt said according to Hollyscop today.

Pratt also told the magazine that key players Audrina and Lo are also going to leave the show which debuts Tuesday night on MTV at 10:00 pm EST.

Watch the season's preview below: