Carrie Underwood shares first photo of her two sons together since giving birth to baby Jacob

Carrie Underwood is proud of both her little boys, especially her older son who she photographed holding his brand new brother.

Underwood shared the first photos of her newborn son, Jacob Bryan Fisher, in an Instagram post on Wednesday. In one of them, Isaiah carefully holds his baby brother.

The country singer made the announcement via the photos as well as the caption of the post. She revealed that her son was born since Monday earlier this week.

The caption began:

"Jacob Bryan Fisher entered the world in the wee hours of the morning on Monday... his mom, dad and big brother couldn’t be happier for God to trust them with taking care of this little miracle!"

She continued:

"Our hearts are full, our eyes are tired and our lives are forever changed. Life is good..."

In the picture of Isaiah holding his brother, he wore a chic black fedora hat. He was seated with a large white pillow resting on his thighs.

In the mock-baby bed lay Jacob, his tiny mouth slightly open. Isaiah supported him under with his arms. Father Mike Fisher was kneeled down as he overlooked the two.

Underwood, 35, also posted a photo of herself holding Jacob. Fisher was in another picture cradling the newborn in his arms.

Fisher was also elated by the welcome of the new baby. He took to Twitter and Instagram to make the announcement to his fans.

Part of his caption read:

"Jacob Bryan Fisher! You are a gift from our Lord! The last few years has had its challenges and it makes this moment even more sweet!"

In September, Underwood expressed her thoughts regarding her older son's attitude to his coming brother. She spoke on "The Tonight Show Starring Jimmy Fallon."

She said:

"He'll be really sweet and he'll talk to my belly and kiss my belly — he's the sweetest little boy. But I mean, no kid can really know that their life is going to change. He'll just have to share Mommy."

She said that Isaiah, three, suggested a name for his new brother but it didn't really stick. "He's just gonna be a good big brother. He's a good little guy," she insisted.

We wish little Jacob the best of health. It's clear he has lots of love already and a supportive older brother to get him through the tough stuff. We can't wait to see the two play together.