Carrie Underwood may be a successful singer and actress, but her favorite role is mom to her seven-month-old son Isaiah!

"We're figuring things out as we go along," the 32-year-old star said in a new interview with Today of welcoming her baby son with her husband, Mike Fisher, 35, in February.

Carrie loves being a new mom so much, she confessed she's written a song about her little boy on her new album, Storyteller. "It would be impossible to not let your life kind of work its way into your music," she said of becoming a first-time mother.

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"My son — he's the happiest little thing in the morning. He wakes up ready to go and smiling and laughing. It makes mornings a little sweeter," she added.

Carrie and her professional hockey player hubby welcomed Isaiah — their only child — on Feb. 27. The couple first met in 2008 and started dating soon after. They later married on July 10, 2010.