It's been years since former "Hills" star and "Fabulist" co-host Kristin Cavallari and boy-bander turned solo artist Nick Lachey dated (eight, to be exact), but it's clear they left something of an impression on each other. K-Cav stopped by VH1's "Big Morning Buzz Live" yesterday, which her ex is now hosting, and among talk of trends that she and fellow "Fabulist" fashionista Orly Shani hate (dresses with side cutouts and jackets-as-capes, respectively), Nick and Kristin jokingly addressed the white elephant in the room: the fact that they named their firstborn children the same name!

After congratulating Kristin on her second pregnancy and pointing out that she and husband Jay Cutler will have to defer to a "man-to-man defense" once Baby #2 is born, Nick playfully pretended the name of Kristin's toddler, Camden, was brand new information. "I didn't think you had any clue!" she replied with a knowing laugh (Nick's little Camden was born a month after her little Cam). And the like-mindedness didn't stop there: Both TV personalities agreed that there's no need for babies to dress in designer threads. Long live onesies embroidered with Tweety Bird!

Watch the "Big Morning Buzz Live" clip for more from the former couple, including photos of some rather embarrassing fashion faux pas.

Featured photo courtesy of @NickLachey