He has three daughters with his ex-wife Lisa Stelly- Pearl, 10, Andy, 6, and Minnie, 4.
"Frederick Michael Dillard is here! He was born 7/7/2022," she wrote.
While talking of fatherhood and his involvement in the lives of his children, he admitted to New York Times that he doesn’t play a prominent role in his kids’ lives when they’re young.
She had announced her pregnancy in late January and followed by a picture of herself cradling the baby bump in February.
She is named Exa Dark Sideræl Musk but is nicknamed Y.
The director confirmed the news on Wednesday.
No biography was found.