The Hills wrapped up this season with familiar themes from recent episodes - from backstabbing to boyfriend stealing! While Lauren Conrad bid adieu to the show, this episode marked the return of former ‘Laguna Beach’ star Kristin Cavalleri (gasp!). Next season promises to be more exciting than ever. Until then, check out the most dramatic moments and the fabulous ensembles in our Hills episode 510 gallery!

Photos courtesy of MTV.

Heidi breaks the news to Stephanie that she's chosen her sister, Holly to be maid of honor.

Heidi, Stephanie and Audrina laugh and reminisce at Heidi's bridal shower.

At dinner with Brody, Lauren expresses her reservations about attending Spencer and Heidi's wedding.

When Brody runs into Spencer, he's shocked at how much his friend has changed.

At People's Revolution, Lauren tells Kelly Cutrone that she's ready to be more independent when it comes to her career.

At Heidi and Spencer's dinner rehearsal, Stephanie makes a heart-felt speech.

The evening turns sour when Holly throws a potato that stains Heidi's brand new purse.

At Lauren and Lo's, the girls have one last party before moving out of their house.

On Heidi and Spencer's wedding day, Heidi's shocked when Lauren enters the room.

Lauren tells Heidi that she was meant to attend the wedding - after all, they were best friends.

'The Hills' gang is surprised when Kristin Cavallari makes an appearance at Spencer and Heidi's wedding.

Kristin catches the bouquet, and Heidi tells her she's next!

Hi SeenON! I just love the teal dress that Audrina wore to Heidi’s bridal shower on The Hills season finale! I NEED this dress and would love to know where to find it. Please help. Thanks! - Missy

Hi Missy! Audrina pulled out all the stops for Heidi’s bridal shower in the “Something Old, Something New” episode of The Hills wearing Shoshanna’s teal One Shoulder Silk Dress. We found it at Bergdorf Goodman in black!  With its modern asymmetrical neckline and classic ruched skirt, this dress can be worn to the classiest of soirees or the coolest parties.

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It’s no secret by now that Kristin Cavallari will be starring in The Hills Season 6. But will you still be watching without the loveable Lauren Conrad? From her closet full of flirty tops to glossy shades galore, we admit that this girl and her impeccable fashion sense had a lot to do with us developing an ongoing affair with the show.  Take the poll and tell us how you feel. And make sure to check out the trailer above for a sneak preview of the jaw-dropping drama that awaits in Season 6!

Video courtesy of MTV.

After giving one of the most uncomfortable toasts we’d ever heard at Heidi and Spencer’s rehearsal dinner, Holly Montag had the gall to throw food across the table and stain the bride-to-be’s Nancy Gonzalez handbag!  We know that money comes just as fast as it goes in this family, but even Heidi was nearly in pieces upon seeing her brand new crocodile clutch get ravaged.

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When we found out that Lauren was attending Heidi and Spencer’s wedding on The Hills Season 5 finale, one of the first thoughts that immediately popped into our heads was, “No way! What is she wearing?” Imagine our delight when we learned that she chose this flared boatneck dress from the Valentino RED collection. It’s just too bad Kristin Cavallari had to steal her thunder by wearing the same color!

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Spoiler alert! On this Sunday’s episode of The Hills, Kristin Cavallari makes a surprise cameo at Heidi and Spencer’s wedding! What?!!! Does she even know Heidi and Spencer? We were wondering the same thing. Regardless, she makes a grand entrance down the aisle of a massive sanctuary wearing this Long Ruffle Hem Dress from Twelfth Street by Cynthia Vincent.

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The girls dropped the news to Lauren in the last episode of The Hills. Heidi’s wedding to Spencer is on! And everyone’s going - everyone but Lauren, that is. A desperate plea from Heidi and (surprise!) Spencer has her contemplating her regret. But what do you think she should do?

Photo courtesy of MTV.