AceShowbiz -

Their little girl has arrived! Kristin Cavallari and Jay Cutler welcomed their third child, a baby girl, together on Monday, November 23. The former "Hill" star announced the happy news on Instagram.

Kristin posted a photo of a pink baby clothes and her newborn baby's footprint along with caption, "Saylor James Cutler was born today at 132pm!!" Saylor weighed in at 7 pounds, 6 ounces and measured 19 1/4 inches. Kristin and Jay's new bundle of joy joins big brothers Camden Jack Cutler, 3, and Jaxon Wyatt Cutler, 1.

Saylor James Cutler was born today at 132pm!! 🎀💕

A photo posted by Kristin Cavallari (@kristincavallari) on Nov 23, 2015 at 1:58pm PST

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Kristin announced her third pregnancy back in May. "We're at it again! Thrilled to announce baby number 3 is on the way! The cutler crew just keeps growin'!" the former "Laguna Beach" star captioned a picture of her making a heart with her hands around her stomach while her two little boys sit in a red wagon behind her.

In July, she revealed that she's expecting a daughter. "Our new addition!" she wrote alongside a photo of herself embracing her husband while holding tiny pink sneakers. "The boys are so excited to have a little sister on the way!!!"