"Happy birthday to my baby bull, Jaxy!" the mother of three wrote on Instagram, honoring her middle child on his big day Kristin Cavallari/Instagram Kristin Cavallari's son Jaxon just hit double ...

Gary Martin and Sgt. Brian Williams, arrived at Jaxson’s home in official vehicles, lights flashing. One CCSO SUV even sported a “Happy Birthday Jaxson” banner in honor of the occasion.