On Monday (23 November), the 28-year-old former Hills star announced the exciting news that she had given birth to her daughter.
Announcing the news in an Instagram post, Kristin wrote "Saylor James Cutler was born today at 132pm!!" alongside a snapshot, which showed an adorable outfit of a pink baby grow and matching bow next to imprints of baby's footprints.
It's not surprising that Kristin had an all pink ensemble ready and waiting for her newborn's arrival, having previously given birth to two sons Camden, three and Jaxon, one.
Wondering where the name Saylor came from? Well back in September Kristin revealed she's had the name in mind ever since her first pregnancy. The former Laguna Beach star explained how it came about during a chat with Cricket's Circle: "We picked out this baby girl's name when I was pregnant with our first.
"I met a woman and her dog, and I loved her dog's name. Funny enough, it was the name she had picked out if she had a girl, but she had boys, so she used it for her dog instead. Here we are 3.5 years later, and we are going to use that name for our little girl!"
Kristin revealed she was having a daughter back in July in the sweetest way. Pictured with her husband, Kristin held a pink pair of tiny baby Converse in her hand. We can't wait to see Saylor wearing them!
With fellow Hills star Audrina Patridge recently announcing her engagement, and Whitney Port sharing gorgeous snaps from her dreamy wedding, we're feeling all nostalgic for the show. It was just so good, right?!
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