Kristin Cavallari’s 12-year-old son “wants to be on social media”. The 37-year-old star – who has Camden, 12, Jaxon, ten, and Saylor, eight, with her ex-husband Jay Cutler – has defended her recent decision to share a photo of her eldest son’s face online. Kristin wrote on Instagram: “OK, I appreciate everyone DMing me telling me that I showed Camden’s face, I know. He’s a little bit older now and he wants to be on social media, which is the only reason why I showed him.” The blonde beauty – who was married to Jay between 2013 and 2022 – had previously made a concerted effort to keep her kids’…