What is the sum of X and Y? Nope, we’re not talking about a math equation.
X plus Y equals siblings.
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Elon Musk and Grimes have a son who they call X, short for X Æ A-12, and now they have a daughter who they call Y.
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Grimes revealed to Vanity Fair that the pair welcomed a second child together in December through a surrogate.
Her full name is Exa Dark Sideræl Musk.
The 33-year-old singer and 50-year-old Tesla founder split up last September, but they’re back on, sort of. Not living together, but Grimes said they see each other all the time and they want to have more kids.
Y is Musk’s 9th child.