Scarlett Johansson Drops Details About Infant Son's New Interest

Scarlett Johansson got personal about her children — daughter Rose Dorothy and son Cosmo.

[{"selector":"#anim-e3eb4ead-c1b6-4e73-be3f-f35065256828","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

The Marvel star revealed she loved watching her infant son discover new details about himself.

[{"selector":"#anim-1e0c3801-f41c-41f8-b875-75b78e369b9d","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

The 4-month-old baby recently discovered a new body part that he couldn't stop touching.

[{"selector":"#anim-1d478231-c10d-40fc-8e7d-c39c397fb8e2","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

"The Avengers" star's daughter was excited about the actress's upcoming animated movie, "Sing 2."

[{"selector":"#anim-aed5c2d7-d52b-4ad8-b391-242bc78e1578","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

Johansson shared her son with husband Colin Jost while Rose came from a previous relationship.

[{"selector":"#anim-1ade132d-78e3-4a4a-a378-8ea1b60345e4","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

The "Lucy" actress's mother-in-law didn't want her grandson to be named "Cosmo."

[{"selector":"#anim-da39245b-4745-4b89-9063-ef0ab1e0c47a","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

Jost's mother pestered the couple to change her grandson's name.

[{"selector":"#anim-9cc5c546-ac35-4d87-9564-70633368f43e","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

The "Ghost In The Shell" Star doesn't use any social media platform.

[{"selector":"#anim-334d06e2-db8c-4c56-a5b5-48810bbc543c","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}]

Johansson stated that her private life was her business and not for the public's enjoyment.

[{"selector":"#anim-b6f537b7-2a13-4e00-beb0-13cc0941b9c9","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.01)","offset":0.33},{"transform":"scale(0.999)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":3000,"easing":"ease-in-out","fill":"both","iterations":1}] Learn more