"Welcome Jaxon Wyatt Cutler," "The Fabulist" co-host announced on Instagram, giving the baby's weight at 7 pounds, 11 ounces, and including a picture of tiny sheepskin slippers, Mom's hospital ID bracelet and a little blue-and-white striped knit hat.
Cam, however, perhaps wasn't as thrilled about his looming big-bro status.
"We try to tell him there’s a baby inside Mommy’s belly," Cavallari, 27, told People back in March. "He doesn’t really understand that. We’ll be like, 'Camden, do you want to be a big brother?’ and he’ll shake his head no."
(By the way, does anyone remember the big Camden kerfuffle of 2012, when Nick and Vanessa Lachey used the same name when their tot arrived two months after the Cutlers' first child, and then "The Hills" alum tweeted that thing? Nah? OK, nevermind.)