"Black Widow" star Scarlett Johansson and her husband, "Saturday Night Live" comedian Colin Jost, have welcomed a son named Cosmo, Jost shared Wednesday in an Instagram post.
The baby is the couple's first child together. The actress shares 6-year-old daughter Rose Dorothy with ex-husband Romain Dauriac.
"OK ok we had a baby," Jost wrote. "His name is Cosmo. We love him very much."
The "Saturday Night Live" star, who was performing two sold-out shows at the Ridgefield Playhouse in Connecticut, told the audience on Saturday that he and Johansson were expecting, according to eyewitnesses.
"Colin announced from the stage that he and Scarlett are expecting soon," one source told ABC Audio. "The crowd was very excited -- everyone cheered and clapped."
Johansson, 36, and Jost, 39, confirmed their engagement in 2017 after two years of dating, and tied the knot in October 2020.