Lauren begins to realize that the chemistry she felt for Doug in high school may no longer be there. Whitney is nervous about heading to New York for work, but things turn around when she finds herself on a date with a handsome model. Spencer is serious about cutting Stephanie out of his life, even when she brings him a peace offering.

When Lauren runs into Spencer at Stephanie's birthday, the birthday girl finds herself at odds with her brother and her friend. Kelly Cutrone fires someone at People's Revolution, and Whitney has to step up to fill the void. Lauren's relationship with Doug may be moving a little too fast.

Season four kicks off with tensions nearing a breaking point between Audrina and Lo. To make peace, Lauren and Lo throw Audrina a birthday party, but when Lo decides not to play along the situation gets worse. Lauren tries to make a good impression on a new boy, and a visit from Heidi's sister Holly threatens Spencer and Heidi's relationship.

In the season finale, Audrina feels shut out by Lauren's close friendship with Lo, and wants to move out. Lauren makes a heartfelt attempt to patch things up with Audrina, but it may be too late. Meanwhile, Spencer fears he's going to lose Heidi forever when he learns she's taking a job in Las Vegas.

Lauren is caught between friends, as tension between Lo and Audrina builds. Deciding things are over with Spencer, Heidi accepts a job opportunity that will take her to Las Vegas. When Stephanie kicks Spencer out of her house, he returns to Heidi but realizes it may be too late.

THE HILLS star Heidi Montag talks to USA Today s Will Keck about her successful fashion line.

We bring you the latest schedules -- and updates -- for all the new and returning shows this fall.

Could this be the last season of "The Hills" for Lauren Conrad? Find out about the latest show gossip.

We caught up with the All-American Rejects at "The Hills" finale party, and they told us about their busy lifestyles.

MTV threw a red carpet party just before the season finale -- and SOAPnet.com was there!