'N Sync alum Chris Kirkpatrick announced on Twitter the birth of his first child, a baby boy with his wife Karly.

"So proud of @MagicKar! She is the real Wonder Woman! Welcome our new edition Nash Dylan Kirkpatrick!!!!" the former pop star wrote Tuesday alongside a photo of Karly holding Nash in her arms while on a hospital bed.

Kirkpatrick and Karly, who tied the knot in 2013 after several years of dating, announced that they were expecting their first child in March.

"Karly and I are over the moon excited that we are welcoming a new addition to the family," Kirkpatrick said at the time. "We are both looking forward to becoming parents, and learning how much fun having a child will be."

In July, Kirkpatrick shared with Us Weekly some parenting advice that was given to him by fellow 'N Sync alum Justin Timberlake.

"Justin told me a million times, 'Your life is going to change.' [He warned] that, 'Now whenever you are changing a diaper and things like that, there is a weapon that is out there and it's going to go. Wrap things in plastic, be ready for anything,'" he said.

"He's loving it because he's telling me all this crazy stuff and he's like, 'Just trust me on this one.'"