Elon Musk and Grimes secretly welcomed their second child in December.
Singer Grimes and Tesla and Space X CEO Elon Musk have welcomed their second child together, a daughter named Exa Dark Sideræl Musk. The little girl was born via surrogate in December last year, Grimes revealed in a wide-ranging interview with Vanity Fair published on Thursday. Although the 33-year-old Canadian musician apparently had no intention of announcing the birth of their second child, nicknamed "Y," she shared the news after Vanity Fair journalist Devin Gordon overheard a baby crying. Grimes and Musk previously welcomed a son named X Æ A-Xii -- pronounced: "X A.I. Archangel," or "X"-- in May 2020. Musk, 48, has five other children -- twins Griffin and Xavier and triplets Damian, Saxon and Kai -- from a previous marriage.