Katherine Webb, AJ McCarron celebrate birth of third child UPI News Service, 04/08/2021 Katherine Webb and AJ McCarron are celebrating the birth of their third child. ADVERTISEMENT The 31-year-old model and 30-year-old professional football player recently welcomed their third child, son Gunnar Cruz. Webb shared the news Wednesday on Instagram alongside a photo of herself holding her baby boy. "Hey baby boy welcome to the world. Gunnar Cruz McCarron. Your brothers are so excited to meet you," she captioned the post. Singer Jessie James Decker and television personality Kamie Crawford were among those to congratulate the couple in the comments. "Omg congratulations, he is absolutely beautiful! Love new baby smell!!!!!" Decker wrote.