Kristin Cavallari and Jay Cutler welcome third child, daughter Saylor James

/ Source: TODAY

It's a girl!

Kristin Cavallari and her husband, Chicago Bears quarterback Jay Cutler, welcomed their third child Monday, the proud mom announced on Instagram this afternoon.

"Saylor James Cutler was born today at 132pm!!" Cavallari wrote, revealing her baby girl's unique name.

The former reality star first shared the news of her pregnancy on her mobile app back in May, writing, "We're at it again! Thrilled to announce baby number 3 is on the way! The Cutler crew just keeps on growin'!"

Nearly two months later, she revealed that they were expecting a girl, posting a photo of the couple that featured a tiny pair of pink Converse sneakers.

Courtesy Kristen Cavallari app

"The boys are so excited to have a little sister on the way!!!" read the caption.

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Cavallari, 28, and Cutler, 32, who were married in 2013, also have two sons together: Camden, 3, and Jaxon, 1.

Cavallari has updated fans on her pregnancy via social media in recent weeks, sharing photos of her growing baby bump.

"It's hard to believe I will be a mom of 3 in just a few short weeks. I owe so much to my babies...they have changed me in so many ways for the better," she wrote on Instagram last month.