Jenna Dewan and fiancé Steve Kazee welcome baby boy: 'Our hearts exploded'

Hot mama! Jenna Dewan is dancing her way into 40 on Dec. 3.
Hot mama! Jenna Dewan is dancing her way into 40 on Dec. 3.

It's a baby boy for Jenna Dewan and her new fiancé, actor Steve Kazee.

The 39-year-old actress revealed on Instagram that the couple welcomed their first child together on March 6 and named him Callum Michael Rebel Kazee.

"And just like that, our hearts exploded into all of eternity and beyond," she captioned a black-and-white photo of her snuggling their new bundle of joy. "Welcome to the world you little angel!"

Callum is the first child for Kazee, 44, and the second for Dewan, who shares 6-year-old daughter Everly with ex-husband Channing Tatum.

Kazee also took to Instagram to announce the addition.

"In an instant our universe burst wide open and nothing would ever be the same. Welcome to earth star child," he captioned a photo of the newborn wrapping his hand around his finger.

The new father shared the meaning behind their baby boy's name.

Taking to his Instagram stories, Kazee said he's gotten a lot of questions about how the couple came up with the name, so he explained.

"Callum: Gaelic for Dove because he has been so sweet and peaceful since landing in our arms," Kazee wrote before sharing that "Michael" is his middle name.

The name Rebel is an ode to his mother who's name is Reba, but "from a very young age her father called her Rebel."

It's shaping up to be big year for Dewan and Kazee. In February, the couple announced their engagement with doting posts.

"A lifetime to love and grow with you...you have my heart," Dewan captioned a sweet photo of the lovebirds kissing, where she proudly shows off her new engagement ring.

Kazee shared the same picture on his Instagram account, along with lyrics to "Let It Breathe" by Water Liars: "When you wake in the morning I will kiss your face with a smile no one has ever seen. When you wake in the morning I will kiss your eyes and say it’s you I have loved all these years."

Dewan announced the pregnancy back in September and shared photos of her growing baby bump.

"Becoming a mother is quite simply the absolute best most incredible thing that has ever happened to me," she wrote in one post, calling Kazee a "gift from above."

More: Jenna Dewan announces engagement to actor Steve Kazee: 'You have my heart'

More: Steve Kazee raves over Jenna Dewan's 'Flirty Dancing' premiere: 'She is a gift to this world'

Contributing Cydney Henderson

This article originally appeared on USA TODAY: Jenna Dewan and Steve Kazee welcome baby boy, first child together