Musk is a close adviser to US President Donald Trump. Musk responded with a heart.

"Discussed with Elon and, in light of beautiful Arcadia’s birthday, we felt it was better to also just share directly about our wonderful and incredible son Seldon Lycurgus," Zilis said in a post on X. She did not say when the child was born.

Zilis  announcement comes two weeks after conservative influencer Ashley St. Clair said that she also recently had a child with Musk.