Ready, set, drama!
In addition to Cavallari's return to MTV, Audrina Patridge, Lo Bosworth, Heidi Montag and husband Spencer Pratt are all expected to get caught up in what occasional "Hills" co-star Holly Montag described as the "whirlwind" known as Cavallari.
"I've seen a little, but honestly, she came in like a whirlwind ever since the first day at the wedding, the Speidi wedding," Montag told MTV News.
And although Holly isn't sure how to handle the ensuing drama, her brother-in-law, Spencer, welcomes the whirlwind to the show. "There wouldn't be a 'Hills' if there wasn't a Kristin Cavallari, because the 'Laguna Beach' brand wouldn't have had the power," Spencer said. "We still love Lauren, we'd love to have you come back on the show. But hey, you were the calm, quiet girl trying to steal Kristin's boyfriend, the cool girl at the high school. So shout-out to the cool girl joining 'The Hills'!"
Cavallari herself has been quite open about the stir she's causing in the lives of the kids on the show and said that she felt it was time for her to come back.
"Well, I'm coming back for a few reasons," Cavallari explained in May. "One is they've been asking me to do 'The Hills' for a while now, and I just thought, what was the point of going on 'The Hills' when it was Lauren's show and all it would really do is relive high school drama, which was 'Laguna Beach.' So I thought with Lauren leaving, it's kind of the perfect time."