Just over one month after her son's birth, Carrie Underwood has shared the first full picture of her and husband Mike Fisher's bundle of joy.

Underwood posted a photo on Instagram on Sunday afternoon (March 29) of baby Isaiah Michael Fisher snuggled up in a fuzzy blanket and the type of gauze that professional photographers often use in newborn photo shoots. He's sleeping but holding a tiny hockey stick, and Underwood captioned the picture "The Predators are in the playoffs! Just waiting to get called up! #PutMeInCoach." (Mike Fisher's hockey team, the Nashville Predators, clinched a spot in the NHL Stanley Cup playoffs on Saturday.)

Baby Isaiah was born on Feb. 27. Underwood and Fisher shared the news on social media on March 3, but at that time, they included a photo that showed only Isaiah's little hand.

Underwood hasn't made any major appearances since giving birth, but she's nominated for three ACM Awards at the 2015 ceremony, which is coming up on April 19.

“I know it’s possible to be a great mother and to be on the road,” she says. “You don’t have to sacrifice that much. I see people like Martina [McBride] do it and Faith [Hill] do it. I know it’s a possibility. I just maybe need to sit down with them and say, “How DO you do it?’”

The singer does not have a full tour scheduled for this summer, but she will play a couple festival dates, including the Watershed Festival, which is set for July 31-Aug. 2.

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Carrie Underwood's Pregnancy in Pictures