AceShowbiz - Olivia Munn and John Mulaney are proud parents after welcoming their first child together. On Friday, December 24, the "X-Men: Apocalypse" actress and the comedian took to their respective Instagram accounts to share the first picture of their newborn son in addition to revealing his name.

In one Instagram post, Olivia treated fans to a sweet picture of her little bundle of joy sleeping soundly while being wrapped in a white fluffy blanket. He looked even more adorable with his baby blue beanie. "My Golden Ox baby. Malcolm Hiep Mulaney. Happy Holidays," so "The Newsroom" alum wrote in the caption.

John also shared a similar picture on his own page. "Meet Malcolm Hiep Mulaney. He has his whole life ahead of him. He hasn't even tried seltzer yet," the stand-up comedian said. "I'm very in love with him and his whole deal. Happy Holidays."

John confirmed that he and Olivia were expecting a child together during his appearance on "Late Night with Seth Meyers" in September. "I got into this relationship that's been really beautiful with someone incredible ... And we're having a baby together," he shared with host Seth Meyers at the time.

The comic went on to say, "Olivia and this baby have helped save me from myself in this early journey out of recovery." He was referring to him checking himself into rehab last December following a decades-long battle with addiction.

As for Olivia, she opened up about the chatter surrounding her pregnancy in an interview with The Los Angeles Times back in mid-November. "There's this vulnerability that I feel that makes me want to...just turn everything off," she admitted. "I'd rather close the door to that and just take care of myself and my baby."

"The Predator" star continued, "My brain hasn't been able to settle because it's just a constant feeling of you're doing it wrong. People tell me the baby will come and then you'll figure it out. But that doesn't stop the anxiety I feel right now."

Elsewhere in the interview, the actress also discussed her relationship with John, whom she began dating shortly after his split from his wife of six years Anna Marie Tendler. "It's definitely not foreign for me to have people speculate incorrectly about things and to have rumors run rampant in one way," Olivia shared. "They think they know our relationship so well. When in reality, they don't."