Kristin Cavallari's Debut On 'The Hills' -- Watch A Preview Here!

Season finale airs Sunday at 8 p.m., just before the MTV Movie Awards.

Now you can see for yourself — Kristin Cavallari is heading to "The Hills"!

A new video clip from Sunday night's season finale of "The Hills" shows Cavallari's debut on the series. Rumors of her involvement had been circulating since it was announced that Lauren Conrad will be leaving the show, and just weeks ago, it was confirmed that Cavallari will have a starring role in season six. Both Cavallari and Conrad made their MTV debuts on the series "Laguna Beach," which spawned "The Hills."

In the clip, we see Cavallari entering into the Speidi wedding to an ominous music cue. As she walks down the aisle, we can see the rest of "The Hills" cast in attendance: Brody, Lo, Justin Bobby, Audrina, the scandalous Stacie the Bartender, and even a Perez Hilton sighting in the back row.

"The Hills" season finale airs on Sunday at 8 p.m. ET, just before the MTV Movie Awards. Lo Bosworth, Frankie Delgado and Stephanie Pratt will join MTV News' Sway and Tim Kash as MTV Movie Awards weekend guest hosts.

MTV News talked with Cavallari earlier this month about her joining the show. "I'm actually kind of excited," she said. "It's fun because I know the whole crew. It's almost like going home. It's really comfortable. I know what to expect going into it, so I think I'm just more excited than anything."

Like Cavallari, the current "Hills" residents are also excited to have her joining them. "I've been getting phone calls. I think it's great," Cavallari said. "The fact that the cast is really excited makes me even more excited. They've all been really sweet and are welcoming me with open arms. So it's been great."

And although everyone has been great about her joining the show, her biggest cheerleaders come in the form of Speidi, who have already told MTV News how excited they are to welcome Cavallari.

"Spencer and Heidi called me and they were just like going off," Cavallari said. "It's going to be great."

Don't miss the season finale of "The Hills," airing Sunday night at 8 p.m. ET/PT on MTV.