Olivia Munn and John Mulaney are happy about their second child.

Munn posted a series of photos on Sunday, including one alongside Mulaney holding their newborn, Méi June Mulaney. The couple had their daughter via surrogate earlier this month.

“Méi June Mulaney was born on September 14, 2024, the year of the dragon,” Munn wrote.

“The fact that I could not carry my daughter to term affected me deeply,” she added.

In April 2023, the actress was diagnosed with Luminal B breast cancer in both breasts. Munn revealed in March that she had undergone a bilateral mastectomy, among other surgeries, in the months following her breast cancer diagnosis. She also discussed having undergone a hysterectomy as part of her cancer treatment.

RELATED: Olivia Munn talks about breast cancer and fertility problems in her first television interview since the operations

“When I first met our surrogate, we spoke mother to mother. She showed me so much grace and understanding that I knew I had found a true angel,” Munn wrote.

She further expressed her gratitude to the surrogate mother who carried Munn and Mulaney’s child.

“Words cannot express my gratitude for protecting our baby for nine months and making our dreams come true,” she wrote.

“I am so proud of my little plum, my little dragon, for making the journey to be with us. My heart exploded,” Munn continued.

RELATED: Olivia Munn discovered her breast cancer using this risk assessment tool

She ended the post with a note explaining her newborn’s pronunciation. “Méi (pronounced ‘may’) means plum in Chinese,” she concluded.

Mulaney also celebrated the news on Instagram, writing: “We stole so much stuff from the hospital. I love my little girl so much.”

Mulaney and Munn, who married this year, also have a son together, Malcolm, who was born on November 24, 2021.

In an interview with Good Morning America in May, Munn discussed fertility issues and the idea of ​​surrogacy due to her health issues.

“John and I talked about it for a long time. We realized we weren’t done with starting a family,” Munn said. “Right after the double mastectomy, I underwent egg retrieval and that’s a scary process because I have a cancer that feeds on hormones, so I knew there was a risk.”

SEE ALSO: Cancer diagnoses for Kate Middleton and Olivia Munn underscore worrying trend among younger adults

“And our doctor said, ‘Look, we’ll get you one and then we’ll let you know,'” she continued. “And then our doctor called and said, ‘Hey, we got the results back. It’s two healthy embryos.’ And I, we, I mean, just started bawling and crying, both of us.”