Elon Musk has a 3-year-old stepsister which remained a secret until Elon Musk's father revealed in an interview in 2019.

He welcomed the secret love child, Jana, the baby's mother, Errol Musk's stepdaughter.

Errol Musk said "The only thing we are on Earth for  is to reproduce."

The news of Elon Musk's father's secret daughter comes after it was revealed that Elon Musk secretly became a father of twins.

The Musk family tree becomes more complicated with all these new additions.

Elon Musk tweeted "Doing my best to help the underpopulation crisis. A collapsing birth rate is the biggest danger civilization faces by far."

Errol Musk was married to Maye Haldeman Musk in 1970 with whom he had 3children-Elon, Kimbal  & Tosca.

After Errol Musk's split from Maye, he married Heide Bezuidenhout, who already had 2children including Jana.

Errol Musk's stepdaughter Jana became pregnant first in 2017. Now the news of another baby was made public after she was  born in 2019.

"I haven’t checked her DNA. But she looks just like my other daughters, So it’s pretty obvious, you know," Errol Musk said.