Kristin Cavallari and husband Jay Cutler welcomed their third child on Monday afternoon, a daughter named Saylor James Cutler.

The former reality starlet confirmed the news on Instagram, and little Saylor will be joining older brothers Jaxon Wyatt, 18 months, and Camden Jack, 3.

“She’s going to steal Jay’s heart, which will in turn melt mine!” Cavallari gushed in a recent interview. “I’m excited for the boys to grow up with a sister. I think it will help them to better understand and respect women.

So what's in the name? It turns out, she was named after a dog. Not kidding! “We picked out this baby girl’s name when I was pregnant with our first,” Cavallari told People earlier this fall. “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.”