Ashton Kutcher and his fiancé Mila Kunis welcomed a baby girl into the world in Los Angeles on October 1st, and three weeks on the new father finally explains why the new parents decided to call her Wyatt Isabelle.

Ashton Kutcher
Kutcher and Kunis welcomed their daughter on October 1st

The 36-year-old actor did so when he opened up about being a first time dad while appearing on 'Conan' on Tuesday (Oct 28th), and gave an update on how his future wife is doing.

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Kutcher said he and Kunis feel "privileged" that they have time off with their newborn. "It's just the two of us, it's unbelievable. It's the greatest thing on earth," he gushed.

The 'Two and a Half Men actor also shared how he has learned to "calm the baby down," much like a baby whisperer. "I like to give the baby to my friends and let it cry for a second and be like, 'Let me just take this,'" he said.

Kutcher then addressed his daughter's name Wyatt Isabelle, which many people think is rather unusual for a girl. As it turns out, the pair already had a name chosen, but when Mila became pregnant it just didn't fit.

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"One night Mila was just like, 'This is not the name.' I'm like, 'okay it's not the name.' I had to get the creative juices going," he said. "We were going to a Lakers game and I've got name Tourette's. I just started listing off anything and everything that I saw. I was like, 'Sign! Truck! Wall! Door!' She's like, 'Shut up!' I'm like, 'If you don't accept my bad ideas, you'll never accept the good ones.' Then I was like, 'All right I've got a really dumb idea. What about Wyatt?' She goes, 'That's it.' I was like, 'Really? I did it?' She was like, 'Yeah, that's it.'"