Mischa Barton's drug use is what pushed Nicole Richie away. Mischa and Nicole had been very good friends, before
Nicole got Away from Her party girl image. Once
Nicole got pregnant and matured, she stepped away from
Mischa.
More pictures of Nicole after the bump...Nicole used to be a real party girl, especially when her and
Paris Hilton were shooting their reality show.
Nicole was a huge trouble maker. According