​Kristin Cavallari and Jay Cutler expecting third child

Jay Cutler and Kristin Cavallari attend Michigan Avenue Magazine's Fall Fashion Issue Celebration With Kristin Cavallari at W Chicago Lakeshore on Sept. 9, 2014, in Chicago.

Jeff Schear/Getty Images

Kristin Cavallari and Jay Cutler have another baby on the way.

Cavallari, 28, and Cutler, 32, are expecting their third child, the former reality star announced Monday on the Kristin Cavallari Official app.

Cavallari first teased the news on Instagram:



She then posted a photo, showing her making a heart over her belly with the couple's two children in the background.

"We're at it again! Thrilled to announce baby number 3 is on the way! The cutler crew just keeps growin'!" she wrote.

Cavallari and the NFL star already have two sons: Camden, 2, and Jax, 1.

They started dating in 2010. Cavallari says the Chicago Bears quarterback proposed to her via text before they tied the knot in 2013.

In 2013, Cavallari opened up to CBS News about motherhood, saying, "You realize that you have to be completely selfless. It's no longer about you. Your world revolved around the baby. It's the most amazing thing in the world."