Olivia Munn and her husband John Mulaney welcomed Méi on Sept. 14. The new mom of two shared that her new daughter "sleeps so much."

Munn, who shares her daughter and son Malcolm Hiệp Mulaney, 2, with husband John Mulaney, 42, added, “Breast Cancer Awareness Month just started. Last year I was diagnosed with bilateral Luminal B breast cancer.”

Olivia Munn has penned a touching post as she recalls her breast cancer battle. The actor, who shares two children with John Mulaney, took to Instagram to share a sweet photo with her daughter as she opened up about her diagnosis and recovery.

Olivia Munn posted a photo and video of her newborn daughter Méi on her Instagram Stories on Saturday, Sept. 28, almost a week after announcing her arrival.

Olivia Munn marked the beginning of Breast Cancer Awareness Month by celebrating her health and her newborn daughter, Mei

Having a new baby in the house is beautiful and emotional. Those tiny snores and little coos are so perfect — how can you not think about the miracle of life when you hear them? Olivia Munn is feeling extra vulnerable right now as she snuggles with her newborn daughter Méi June,

Munn, 41, who was diagnosed with breast cancer last year and welcomed her second child via surrogate, described her health journey as she marveled at now being a mother of two.