Kristin Cavallari on Monday announced that she and her husband, Chicago Bears quarterback Jay Cutler, are expecting their third child.

The former Laguna Beach and The Hills reality star announced the exciting news using her Kristin Cavallari app. Using the baby news to promote her new app, Jay Cutler's other half took to Twitter to tease the baby news and asked her followers to search for it in the App store.

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Once the app has been downloaded, a message from Kristin Cavallari pops up, which says, "We're at it again! Thrilled to announce baby number 3 is on the way! The Cutler crew keeps on growin'!"

The announcement was posted under a cute photo of the 28-year old in front of her two sons, 2 year-old Camden Jack and 1-year old Jaxon Wyatt, who held a heart-shape symbol with her hands.

Before they tied the knot in June 2013, Kristin Cavallari and Jay Cutler previously announced that they plan to have two more kids after their summer wedding.

Speaking to Glamoholic at the time, Kristin Cavallari shared that they want to have another kid before their wedding and two more after they tie the knot. However, as of August of last year, the TV personality turned fashion designer revealed that she and Jay Cutler have no immediate plans to get pregnant.

"We're just going to have to see how it goes," Jay Cutler's wife said in an interview with Michigan Avenue.

This is extremely exciting news for the couple, who just last year, came under media scrutiny for announcing their decision to not give their children vaccination. However, Kristin made an appearance on Watch What Happens Live to defend her anti-vaccine beliefs and said that it is one of the best decisions she made for her sons.

When she was asked about how her beliefs were supporting the idea of spreading diseases by not allowing her children to get vaccinated, she explained that she is more worried about the side effects that result from vaccines such as allergies, ear infections and asthma.

Kristin Cavallari remains firm on their decision and believes that she and Jay Cutler are "making the best decision" for their kids.

TagsKristin Cavallari, Kristin Cavallari television personality, Jay Cutler, Jay Cutler American football quarterback, baby