Surprise, surprise!

Actress Scarlett Johansson and Colin Jost welcomed a baby boy and we only know because SNL’s Colin Jost announced the news on his Instagram Wednesday.

“Ok ok, we had a baby. His name is Cosmo. We love him very much,” Jost wrote.

Johansson already has a daughter, seven-year-old Rose Dorothy with her ex.

The actress and “SNL” star got engaged in 2019 and wed in 2020.

Congrats!