Elon Musk, the world's richest man, is reportedly expecting his 13th child with author Ashley St. Clair, who revealed the news five months after the birth. Musk, who already has 12 children with three women, has previously voiced concerns about declining birth rates and jokingly stated he's "doing his part." He recently bought two neighboring properties in Austin, Texas, for his "blended" family. So far, only Shivon Zilis, a Neuralink director and mother to three of Musk’s children via IVF, has agreed to move in. Grimes, Musk's ex and mother to three of his children, was reportedly unaware of Zilis' twins until a month later. Musk's first wife, Justine Wilson, is mother to six of his children, including their late son Nevada. Musk is estranged from his transgender daughter Vivian, who recently poked fun at the number of half-siblings she has. The likelihood of all his children living together seems slim.