John Mulaney and Olivia Munn are now parents of two.

The couple announced the arrival of daughter Méi June Mulaney in a Sunday Instagram post which included several photos of the happy family with their newborn and their nearly 3-year-old son, Malcolm.

“Méi June Mulaney came into the world September 14, 2024, the year of the dragon,” Munn’s post began.

In the post, the “X-Men: Apocalypse” actor told readers how it was difficult to come to terms with the fact she couldn’t carry her second child, until she met her gestational surrogate.

Earlier this year, Munn revealed that she underwent an oophorectomy and hysterectomy, a decision she made to reduce the risk of her breast cancer recurring. The star privately underwent treatment for cancer throughout 2023 and is now in remission.

“I had so many profound emotions about not being able to carry my daughter,” the star of “The Newsroom” wrote. “When I first met our gestational surrogate we spoke mother to mother.”

“She showed me so much grace and understanding, I knew I had found a real-life angel,” the caption went on. “Words cannot express my gratitude that she kept our baby safe for 9 months and made our dreams come true.”

“I am so proud of my little plum, my little dragon for making the journey to be with us,” Munn said of her little one, whose name means plum in Chinese. “My heart has exploded.”

Back in July, Mulaney and Munn tied the knot in a private ceremony in upstate New York.

People magazine described the wedding as a “a simple, intimate ceremony at a friend’s home.”