So will Brody Jenner be on hand for her big day?
Negative, according to K. Cav. "Probably not," she told Seacrest. "Our relationship on The Hills was fake, but we dated like six years ago."
The bride-to-be admitted another fauxmance as well: her realtionship with Justin Bobby.
"I haven't talked to him since we finished The Hills," she said, "That was a fake relationship."
Two faked romances just the show? Is there anything we can believe anymore?!
Yes, thankfully, Kristin did actually date her Laguna Beach beau Stephen Coletti and he will be allowed to witness the big day.
"We're really good friends," she explained, adding that her hubby to be and her ex "haven't met yet."
Reality camera crews are also not welcome, according to the future Mrs. Cutler.
"Jay hates all that stuff," she told Ryan, who offered to produce a wedding special à la Khloé Kardashian and Lamar Odom, natch.