Elon Musk‘s superstar singer ex-girlfriend Grimes, 33, shocked the known universe when she revealed to Vanity Fair magazine on Friday, March 10, that she and Elon, 50, secretly welcomed another child — a baby girl named Exa Dark Sideræl Muskaby born via surrogate — together in December 2021. However, despite the fact that Grimes alluded to being in a “fluid” relationship with Elon in the article, which she quickly retracted just hours later on Twitter, HollywoodLife has EXCLUSIVELY learned that their now three-month-old daughter was no secret to Elon’s new girlfriend, Australian actress, Natasha Bassett, 24.