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.
Colin Jost Opens Up About Son Cosmo's Relationship with Scarlett Johansson's Daughter Rose: She's a 'Loving Sister' Colin Jost Had a 'Surreal' NYFW Night at the Tommy Hilfiger Show — on His Own ...