Lauren doesn't go to Heidi and Spencer's housewarming party after hearing Heidi's been spreading rumors about her.

Lauren and Heidi grow even farther apart when Spencer asks Heidi to marry him.

Lauren tries to help Audrina decide if Justin is boyfriend material, but Audrina has already made up her mind.

Heidi takes her fiancé Spencer to meet her family in Colorado, but her parents worry that she's sacrificing her friendships for her relationship. Audrina is crushed when Justin ditches her at Brody's barbecue, and Lauren finally admits how much she misses Heidi. Written by Anonymous

Heidi's social circle shrinks as Spencer breaks up with Brody for hanging out with Lauren.

Lauren gets a blast from the past when her ex-boyfriend Jason calls.

Lauren's feelings for Jason are rekindled, but when they run into Heidi and Spencer, tempers flare.

Lauren is shocked to learn that Jason has a girlfriend, but Jason has a bigger surprise up his sleeve. Heidi finds out Spencer hasn't told his parents about their wedding plans, and Whitney gets in trouble for partying with a rock band before a Teen Vogue photo shoot. Written by Anonymous

The gang celebrates Brody's birthday in Vegas. Audrina's boyfriend Justin causes a rift in her friendship with Lauren.

Jen Bunney tells Lauren that Brody started the rumors about her, but Brody puts the blame on Spencer, leaving Heidi caught in the middle. Lauren apologizes to Audrina for interfering in her and Justin's relationship.

Lauren starts a new romance with a male model, but realizes she still has feelings for Brody.

Lauren and Whitney are sent to New York City where Whitney attempts her first presentation to Teen Vogue's top editors and Lauren meets a fashion icon. Spencer tries to pull Brody back into his life, but Brody isn't ready to forgive and forget. Written by Anonymous

Lauren and Whitney struggle to put on a Marc Jacobs fashion show at Teen Vogue's Young Hollywood Party.

Heidi and Lauren have another fight in public causing Heidi to return to Lauren and apologize for everything that's happened.

Lauren plays matchmaker as Whitney goes on her first date with their personal trainer.

Audrina catches Justin kissing another girl, leading to a final confrontation about their relationship.

Lauren thinks Brody might be too much of a playboy for her ever to get serious about him. Spencer's sister tells him Heidi is secretly having doubts about their wedding, and Audrina goes out on her first date since breaking up with Justin.

Lauren struggles to figure out her relationship with Brody, but an offer to work in Paris makes things more complicated.

Lauren finally gets to go to Paris, but her dream trip is almost ruined when she finds out Brody has found someone new.

Whitney must choose between the safety of Teen Vogue and the risk of a new career.

Lauren makes an unlikely friend when Spencer's sister Stephanie joins her fashion class.

When Lauren invites Stephanie to her birthday party, Heidi and Spencer question Stephanie's loyalty.

Heidi tries to win back Audrina's friendship, but Lauren grows suspicious of Heidi's motives.

Heidi loves her single life, until seeing Spencer with other girls makes her jealous.

With Spencer out of the picture, Heidi makes a last attempt to regain Lauren's friendship.

An old romance is rekindled when Stephen Coletti reenters Lauren's life.

Lauren is caught between friends, as tension between Lo and Audrina builds.

In the season finale, Audrina feels shut out by Lauren's close friendship with Lo, and wants to move out.