Tech billionaire Elon Musk and musician Grimes have had their first child together, according to Musk's Twitter (TSLA)
· Tesla CEO Elon Musk and musician Grimes have announced the birth of their first child.
· The baby was born Monday evening.
· Musk and Grimes, whose real name is Claire Boucher, publicly announced they were dating at the annual Costume Institute Gala at the Metropolitan Museum of Art the first week of May 2018.
·...