The littlest member of Olivia Munn's family made the biggest difference in her battle with breast cancer.
The Newsroom alum opened up about how her 2-year-old son Malcolm, who she shares with John Mulaney, played an important role in her health journey. Re-posting a video of herself and the tiny tot playing by a kiddie pool in the backyard, Olivia wrote in an Instagram Story April 22, "This moment was last summer when I had already had three surgeries and recovery—mentally and physically—was pretty rough."
"The smallest, silliest moments like this lifted me up every single time," she continued. "My Malcolm."
In the original caption of the video, which she initially shared in January, Olivia wrote, "If I knew earlier in my life that this magical boy would be in my future, I wouldn't have worried so much about all the little things."
Olivia was diagnosed with breast cancer last year, leading her to undergo numerous surgeries within 30 days, including a lymph node dissection and a double mastectomy. Not only did Olivia experience severe pain in the aftermath of the procedures, but the challenges of not being able to pick up her son made recovery all the more difficult.
"Malcolm runs up and he said, 'Mama, pick [me] up?' And I said, 'Oh I can't pick you up,'" she recalled of her returned home from the hospital in a recent interview with People. "He just sat on my leg and goes, 'But Mama, pick [me] up!'"
The 43-year-old continued, "That was probably one of the hardest things because all you want to do is pick up your baby."
However, her partner John—who she's been dating since 2021—was there to guide her through the difficult moments of balancing treatment and parenting duties.
"It would've felt like climbing an iceberg without him," Olivia gushed of the comedian. "I don't think he had a moment to himself."
Praising John, 41, for "being an incredibly hands-on father," she added, "And he did it all happily."
Keep reading to see Olivia and John's sweetest moments with Malcolm.
Welcome Méi
On Sept. 22, 2024, Olivia Munn and John Mulaney announced they had welcomed their second child, daughter Méi June Mulaney, via surrogate one week prior.
Baby Girl
Olivia and John shares several pics in their birth announcement for their baby girl, including this sweet photo of the three in the hospital.
Mother of Two
As part of her birth announcement for baby Méi, Olivia shared this pic of the two enjoying a sweet moment.
Family of Four
Méi joins big brother Malcolm, who was born in 2021. After her birth, Olivia and John shared pics of one of their first outings as a foursome.
Baby Bliss
Olivia also shared this pic of newborn Méi catching some zzz's.
Time to Celebrate
John and Olivia celebrated Malcolm's second birthday in November 2023.
Way to Go, Idaho
The parents took Malcolm to the Gem State in June 2023.
Little Moments
Olivia shared this photo of her family of three on Father's Day 2023.
Life's a Beach
John and Olivia hit the beach with Malcolm in March 2023.
Let Them Eat Cake
The couple rang in theirMalcolm's first birthday in November 2022, with Olivia joking that her mom Kim was getting "impatient" with the cake-cutting.
Making Memories
John celebrated his 40th birthday with Olivia and Malcolm in August 2022.
Doting Dad
Olivia snapped a sweet moment between John and their son on stage at Red Rocks Amphitheatre in Colorado in April 2022.
New Parent Pals
The family of three posed alongside fellow parents Dan Levy and Rachel Specter with their daughter Penny.
4 Months
Olivia and John celebrated Malcolm turning 4 months old on March 24, 2022.
Birthday Boy
"Daddy" John cuddled with Malcolm on his 4-month birthdate before heading out to Texas.
Mommy & Me
The actress shared, "It's been 4 months since the happiest, chillest baby came into my world."
Love at First Sight
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."
Boys Reunited
Olivia captioned this adorable embrace with a teddy bear emoji.
In the Family
Olivia shared a pic of Malcolm with his grandma a.k.a. the "retired tiger mom."
"Buttered Biscuit"
Olivia gushed over her baby boy.
Baby Playdate
Olivia and John introduced Malcolm to friends Henry Golding and Liv Lo Golding, as well as the couple's daughter Lyla, in January 2022.
Dads on Duty
John and Henry were seen laughing as they held up their tiny tots.
New Moms
The friends snapped a selfie while introducing their babies.
First Friends
As Olivia wrote, "Malcolm met Lyla today."
Sweater Weather
Olivia and John were pictured arm-in-arm during a sweet moment, seemingly gazing at their little one in January 2022.
A Visit From Uncle Pete
"Uncle" Pete Davidson visited Malcolm in January 2022.
Baby Kisses
John gave his son a kiss on the cheek.
Shhh!
Malcolm fell asleep in dad's carrier during an outing at the Norton Simon Museum in Pasadena, Calif.
New Year Together
The Newsroom actress celebrated New Year's Day 2022 with a new pic of Malcolm.
A Walk With Dad
John shared a selfie with his Malcolm, kept cozy in a blue beanie, while they took a walk.