Olivia Munn's Son Malcolm Wishes Her a Happy Birthday in Sweet Video

Actress Olivia Munn got a super sweet birthday message from her and John Mulaney's 2-year-old son.

Olivia Munn is getting some adorable love from her son on her birthday!

Munn took to Instagram on Wednesday to share a video of herself on her 44th birthday.

"I'm spending my birthday morning in a tent," Munn begins before her 2-year-old son, Malcolm -- who she shares with partner John Mulaney -- can be heard from offscreen declaring, "Happy birthday, Mommy!"

"Oh my gosh! Thank you so much, you're the sweetest," Munn replies with a beaming smile, before asking, "Can you say, 'I love you, mama?'"

"I love you so much," the adorable toddler exclaims to Munn's delight.

"Can I go inside the house and watch Red Panda?" Malcolm asks -- likely referring to the Pixar film Turning Red -- eliciting an off-screen laugh from Mulaney.

"What a year," Munn captioned the post. "Thank you for all the birthday wishes!!!"

This has certainly been a year of ups and downs for Munn and her family. In March, the actress revealed that she'd been diagnosed with breast cancer. Munn explained that she had already undergone a double mastectomy -- just 30 days after she was first diagnosed -- and was put into medically induced menopause. She has since had a hysterectomy and oophorectomy, which are procedures to surgically remove her uterus and ovaries. 

Sitting down with Michael Strahan on Good Morning America in May, Munn said that she made an effort to document much of her experience to pass down to her child in the event that her treatment was unsuccessful. 

John Mulaney and Olivia Munn attend the 96th annual Academy Awards on March 10, 2024 in Hollywood, California. - Arturo Holmes/Getty Images

Munn and Mulaney were first romantically linked in early 2021, and the couple went public with their pregnancy news in September 2021. The pair welcomed Malcolm in December 2021.

ET spoke with Munn while she was expecting, and she shared that she was thrilled to become a mom and welcome a baby into the world with Mulaney.

"I'm just excited about meeting whoever it is, and bringing a little person into this world."

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