As Colin Jost and Michael Che were talking about their live special on the 2024 TV schedule, New York After Dark, E! News asked about Jost’s child Cosmo. In response to a question about milestones the 3-year-old has hit, the SNL cast member said:

Colin Jost opens up about his wife Scarlett Johansson's daughter Rose's relationship with their son Cosmo, saying they "got along really well." Jost and Johansson share Cosmo, while the actress shares her daughter with ex-husband Romain Dauriac.

Scarlett Johansson and Colin Jost married back in 2020, and they still seems to be very much in love. They have a son together named Cosmo, and Johansson even contributed to her husband getting a small role in her latest film,

Colin Jost gave an inside look into how his and Scarlett Johansson’s 3-year-old son Cosmo gets along with her and ex-husband Romain Duriac’s 10-year-old daughter Rose.

When Colin Jost decided to purchase a decommissioned Staten Island ferry boat to the tune of $280,000 with fellow Saturday Night Live alum Pete Davidson in 2022, the unorthodox decision became the butt of many jokes - several made by Jost himself.