In the world of Hollywood and celebrity culture, privacy is often a luxury. However, some stars have managed to keep major life events, like the birth of their children, under wraps—at least for a while. From Scarlett Johansson to Elon Musk, here’s a look at celebrities who secretly welcomed children and surprised fans with their announcements.
Scarlett Johansson and Colin Jost
Scarlett Johansson, known for her roles in the Marvel Cinematic Universe, has always been private about her personal life. She shares daughter Rose, born in 2014, with ex-husband Romain Dauriac, and son Cosmo, born in 2021, with husband Colin Jost.
Johansson managed to keep her second pregnancy a secret, but Jost accidentally spilled the beans during a comedy show in August 2021. “We’re having a baby,” he announced. Just one day later, Us Weekly confirmed the birth of their son. Jost later shared the news on Instagram, writing, “OK OK we had a baby. His name is Cosmo. We love him very much. Privacy would be greatly appreciated.”
Elon Musk
Elon Musk, the billionaire entrepreneur, is no stranger to keeping his family life private. In February 2025, conservative influencer Ashley St. Clair claimed on X (formerly Twitter) that she had secretly welcomed a child with Musk five months prior.
“Five months ago, I welcomed a new baby into the world. Elon Musk is the father,” St. Clair wrote. She added that she had kept the news private to protect her child’s privacy but felt compelled to share it after learning that tabloid media planned to expose the story. Musk has not publicly commented on the allegations.
This isn’t the first time Musk has kept a child’s birth under wraps. In December 2021, he and ex-partner Grimes revealed they had secretly welcomed their second child, a daughter named Exa Dark Sideræl, via surrogate.
