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Brad Paisley may have blown it during the CMAs and revealed the gender of Carrie Underwood's baby to the world on live TV, but how did Carrie and husband Mike Fisher first find out?

The blonde country bombshell tells ABC News that she and Mike didn't want to find out in the doctor's office because she called it "kind of a sterile place." She says, "We got to see all the pictures and everything. It was really cool to see that, but whenever she'd get near, near those parts we would look away."

Well, how did they find out they were having a boy then?! 

Carrie had suspected she was having a boy, but the doctor put the official news in an envelope, and she and Mike went to a restaurant to formally learn they had a son on the way. The mom-to-be tells ABC, "Just the two of us in a nicer setting, but we both knew. So, that was just confirming our suspicions. We didn't really speak of it before, 'cause we were both just like, 'Whatever. It's all good.' But we knew it was a boy." 

The good news was publicly revealed earlier this month during the CMA Awards, and Carrie revealed she was actually prepared for #BradBlewIt. She tells ABC, "Brad's got loose lips. He's a blabbermouth! So, I was like, 'I'm not gonna tell you until we're ready for the rest of the world to know, 'cause I know you'll tell people.'"

Carrie and Mike's little boy is due in the spring. And then she'll be able to sing "Mama's Song" to him everyday. 

Photos: Getty Images