Elon Musk fathered twins with coworker just weeks before welcoming daughter with Grimes

It's been revealed that Elon Musk secretly fathered twins with a coworker just weeks before welcoming a daughter with his on-again-off-again girlfriend, Grimes.

According to court documents obtained by Insider, the 51-year-old tech mogul and 36-year-old Shivon Zilis – an executive at Neuralink, where Musk is CEO – welcomed the twins in November. Insider's report shows that the twins were born in Texas in November 2021, but their gender and names were redacted. The court documents also show that Musk and Zilis made a request to a Texan county court to change the twins' surname in order for them to "have their father's last name and contain their mother's last name as part of their middle name."

The twins' arrival means Musk has fathered ten children in total. Most recently, he and Grimes – real name Claire Boucher – welcomed a daughter, which came as a surprise to fans given that the pair had called time on their relationship just three months before. Their daughter, named Exa Dark Sideræl, was born via surrogate in December.

Musk also shares a son with Grimes, a two-year-old named X Æ A-12, and he has several kids from a previous relationship: 18-year-old twins and a set of triplets born in 2006 with his first wife, Justine Wilson. The pair also had a son, Nevada Musk, who tragically died at 10 weeks old.

As news broke that he'd become a father again, Musk – who is the wealthiest man in the world, with an estimated networth of £183bn – took to Twitter to share a series of sarcastic messages. "Doing my best to help the underpopulation crisis. A collapsing birth rate is the biggest danger civilisation faces by far," he told his 100.5 million followers.

"Population of Mars is still zero people!" the tech mogul added in another tweet, following up with: "I hope you have big families and congrats to those who already do!"

Earlier this year, Grimes told Vanity Fair that she and Musk have more plans for children in the future. "We've always wanted at least three or four," she said on the topic of kids, going on to give an insight into their relationship. "There’s no real word for it. I would probably refer to him as my boyfriend, but we’re very fluid. We live in separate houses. We’re best friends. We see each other all the time… We just have our own thing going on, and I don’t expect other people to understand it."

You Might Also Like

• A ranking of the very best hair straighteners - according to our Beauty Editors

• Best party dresses to shop in the UK right now

• 11 products you'd be mad to miss from the Net A Porter beauty sale