While the pair kept the name under wraps throughout Lauren’s pregnancy, Nick did tell ET earlier this month that they had picked out a powerful moniker for their first child. Odin, in Germanic mythology, is a "widely revered god."
"It's a very strong name," the 36-year-old singer revealed to ET's Katie Krause at the April 1 premiere of his Syfy film, Dead7. "We can't say the name yet. I've been instructed by my wife to keep it under wraps, but we have a name."
While discussing how excited he was to become a parent, the Backstreet Boys star also gushed about how eager he was to see his wife take on motherhood.
"I don't want to get all sappy, [but] she's the reason I felt comfortable, and I knew that she would be the perfect mother," Nick explained. "She would be able to help me teach our child all the things that he needs to learn."
The couple shared their maternity pics with ET earlier this year, which Nick admitted was a moving experience in its own right.
"I hate getting emotional but seeing her like that triggered this influx of emotions that really made me realize what's happening in our life," he said. "Without each other, the two of us would never have gotten to this point, so it feels amazing and it's crazy how much more in love you can become when you start this phase of your life."
Check out the Carters’ epic, Game of Thrones-themed baby shower in the video below!