Kristin Cavallari welcomes third child and reveals unique name

Congratulations are in order for Kristin Cavallari, who has given birth to her third child with husband Jay Cutler. The former star of The Hills had her baby girl on Monday afternoon, and was quick to share the happy news on Instagram later that day – as well as revealing her daughter's unique name.

"Saylor James Cutler was born today at 132pm!!" Kristin captioned a photo that showed off an adorable pink babygro as well as a piece of paper stamped with the newborn's footprints, plus date of birth and weight.

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

A photo posted by Kristin Cavallari (@kristincavallari) on

Kristin welcomed her baby girl on Monday

Baby Saylor weighed 7lbs 6oz, and joins big brothers Camden Jack, three, and one-year-old Jaxon Wyatt.

"Kristin and Jay are so happy!" a source told E! News following the birth. "They were surrounded by friends and family. Kristin is so thrilled to welcome her new baby girl to her family! Jaxon and Camden are excited to be older brothers. She is feeling great!"

The 28-year-old announced that she was expecting her third child in May. "We're at it again!" she told fans. "Thrilled to announce baby number 3 is on the way! The Cutler crew just keeps on growin'!"

The boys are so excited for a little sister!!!!!! 🎀

A photo posted by Kristin Cavallari (@kristincavallari) on

Kristin announced that she was expecting a baby girl in July

Two months later the reality TV star revealed that she was expecting a baby girl, sharing a sweet photo that showed her holding a tiny pair of pink Converse trainers, resting her arms on Jay's shoulders as they look into each other's eyes.

Kristin was in a reflective mood as she approached her due date, as she talked about how her life has changed since becoming a mother in an Instagram post that showed her cradling her baby bump.

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

Kristin and Jay started dating in late 2010 and got engaged in April 2011. They briefly split up that same year, but reconciled in November and were married in June 2013 in Nashville, Tennessee. The couple had Camden Jack in August 2012, and little brother Jaxon in May 2014.