Scarlett Johansson and Colin Jost had their first child together on Wednesday, according to the Saturday Night Live star's social media post. The couple named the child Cosmo.

Cosmo is the first child of Scarlett Johansson and husband Colin Jost, who tied the knot in October last year. Jost, who is 39-yeas-old, announced Comso's birth on his Instagram on Wednesday. The post read, " Ok ok we had a baby. His name is Cosmo. We love him very much" while further requesting privacy for himself and wife Johansson."

Johansson is also the mother of Rose Dorothy, who is six years old, from her previous marriage to Frenchman Romain Dauriac.

Johansson, who is famous for her role as 'Black Widow' in movies produced by Marvel Studios, was previously married to Romain Dauriac, a Frenchman. The two had a daughter, who they named Rose Dorothy.

Jost briefly announced the pregnancy for the first time while performing at a stand-up comedy at the Ridgefield Playhouse in Connecticut over the weekend.

“We’re having a baby, it’s exciting,” he said, PageSix quoted a source in the audience as said. This comes after the portal reported in July that the Marvel star was pregnant and due soon.

After dating for about two years, the couple got engaged in May 2019 and tied the knot next year in October. Johansson cryptically announced her engagement with Jost while carrying her ring on stage at the San Diego Comic-Con in 2019.

Tony Award winner Johansson skipped multiple screenings and events related to the first-ever solo movie of the character. Johansson's absence from such events sparked rumors about her pregnancy.