According to reports, Kristin and her 30-year-old Chicago Bears quarterback husband, went to Davidson County Clerk’s office in Nashville, Tenn. to buy their marriage license.
Kristin and Jay got engaged back in April 2011 and then had a baby, son Camden, last August.
They had been planning their wedding for this summer.
"It's going to be about 150 people, so not huge," the Laguna Beach star told Us Weekly in May. "I was never the girl who dreamt about my wedding or any of that stuff, but the wedding how we're planning is exactly what I wanted. I think it's going to be perfect for what we're doing."