Lauren is none too happy when Stephanie brings Heidi along to her surprise birthday party.

The show continues to tell Lauren's story. Second episode as part of the season premiere....

Lauren meets Stephanie at Tart in LA, where Stephanie asks what's new at People's Revolution. Lauren tells her that they're looking for a new intern, and Stephanie indicates that she might be ready to leave her current internship and move on to something new. She slyly asks about the application process, and Lauren tells her she could get her an interview with Kelly.

Spencer is reluctant to begin couple's therapy with Heidi. Also, Stephanie begins work at the People's Revolution.

Sparks fly between Audrina and Brody as the girls decide to crash the guys Hawaiian vacation. Back in L.A., Colby, Heidi's ex, comes to town, much to Spencer's chagrin.

The gang make their return to Los Angeles. Meanwhile, Brody and Audrina deal the repercussions from their hookup in Hawaii.

Lauren is put into an awkward situation after Stephanie messes up at work. Meanwhile, Justin calls out Audrina for hooking up with Brody.

Spencer has an important question to ask Heidi's father when he comes for a visit. Meanwhile, Lauren make the decision to fire Stephanie from People's Revolution.

Spenser is asked by Heidi to make amends with Lauren in hopes that she'll attend their wedding. Elsewhere, a recently fired Stephanie has a run-in with Kelly Cutrone, her former boss.

The fifth season comes to a close as Lauren Conrad bids farewell to the Hills. Meanwhile, Heidi and Spencer experience their long-awaited wedding nuptials, and Kristen Cavallari (rival to Lauren on Laguna Beach) makes her re-entrance to the series.

Kristin’s flirting with Justin has Audrina angered as she tries to reconnect with her friends. Elsewhere, Heidi and Spencer are in search of a new home.

Kristin and Stacie team up, but then there’s the talk with Audrina...

Kristin isn’t pleased when Justin’s a no-show at Brody’s party and Audrina moves on with Justin’s best friend.

Kristin thinks she has tamed Justin Bobby, but Justin may not be over Audrina just yet. Plus, Holly loses control at an event forcing Heidi to make her sister confront her drinking problem.

The next morning Kristin and Stacie review the party. Stacie says that Justin's text message prank was weird and Kristin's relationship with him shouldn't be so much work. Kristin tells Stacie that Justin thinks she and Brody still like each other. Kristin admits she had more fun with Brody than with Justin at the party, too, and toys with the idea of dating her ex again.

Kristin and Audrina finally meet. Justin is in trouble and Spencer has a surprise for Heidi...

Brody and Kristin consider rekindling the flame; Justin and Audrina talk about their future.

Jayde clashes with Kristin after deciding she wants Brody back; Heidi hatches a plan to get pregnant---with or without Spencer’s consent; Audrina deals with the fact that Justin still has feelings for Kristin.

Kristin questions her feelings for Justin after a wild weekend in Las Vegas. Elsewhere, Spencer tries to find out if Heidi has stopped taking her birth control

Spencer confronts Heidi, while Justin keeps fighting for Kirstin and Brody freaks out when Jayde wants to move in.