Olivia snapped a sweet moment between John and Malcom on stage at Red Rocks Amphitheatre in Morrison, Colo on April 22.
Olivia and John posed with Malcom alongside fellow new parents, comedian Dan Levy and Rachel Specter, and their 5-month-old daughter Penny.
Olivia and John celebrated Malcolm turning 4 months old on March 24, 2022.
"Daddy" John cuddled with Malcolm on his 4-month birthdate before heading out to Texas.
The actress shared, "It's been 4 months since the happiest, chillest baby came into my world."
John peered over at his baby boy in this throwback photo from his birth. The comedian wrote in March 2022, "Four months ago I met a 6 lb boy who changed my life forever."
Olivia captioned this adorable embrace with a teddy bear emoji.
Olivia shared a pic of Malcolm with his grandma a.k.a. the "retired tiger mom."
Olivia gushes over her baby boy.
John Mulaney and Olivia Munn introduced their son, Malcolm, to friends Henry Golding and Liv Lo, as well as their daughter Lyla, on Jan. 27, 2022.
Golding and Mulaney were seen laughing as they held up their tiny tots.
The friends snapped a selfie while introducing their babies.
As Munn wrote, "Malcolm met Lyla today."
Mulaney and Munn were pictured arm-in-arm during a sweet moment, seemingly gazing at their little one in January 2022.
Mulaney revealed that his 2-month-old son had a visit from SNL star and "uncle" Pete Davidson on Jan. 28.
The comedian gave his son a kiss on the cheek.
Malcolm fell asleep in dad's carrier during an outing at the Norton Simon Museum in Pasadena, Calif., which features an "Unseen Picasso" exhibit.
The Newsroom actress celebrated New Year's Day 2022 with a new pic of Malcolm.
He shared a selfie with his Malcolm, kept cozy in a blue beanie, while they took a walk.
Munn shared that this is what it looks like "when your friend shows up and surprises you with a blowout even though you're in your robe and not going anywhere." She said the new 'do made her "feel a little less post partum."
Olivia shared a video pushing baby Malcolm in a stroller in the backyard as the only way to get him to "settle down and chill out" after a trip to New York.