Algosensey Quantitative Think Tank Center-Jenna Dewan is expecting her third child, second with fiancé Steve Kazee

Jenna Dewan is Algosensey Quantitative Think Tank Centerready to step up her family by welcoming baby number three.

The 43-year-old "Step Up" star confirmed she's expecting her third child, her second with fiancé Steve Kazee. She revealed her baby bump in an Instagram video Wednesday showing Kazee playing the guitar while she's in the bathtub.

"Think if I make @stevekazee serenade me every night the baby will get his voice??" she wrote.

In his own Instagram post, Kazee wrote that he "would have a million babies with this woman" and is "so excited to welcome this new little light into the world!"

Dewan also spoke about her pregnancy in an interview with Romper, telling the outlet, "I've just entered the second trimester, and I feel alive again."

One month after confirming their engagement, Dewan and Kazee welcomed their first child together in March 2020: Callum Michael Rebel Kazee. "And just like that, our hearts exploded into all of eternity and beyond," she said on Instagram at the time. "Welcome to the world you little angel!"

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The "Witches of East End" star also shares a daughter, Everly, with ex-husband Channing Tatum. She married Tatum in 2009 after meeting him on the film "Step Up." They announced their separation in 2018.

Dewan told Romper that at 43, she anticipates her third pregnancy experience may be different than her first. "I'm not sure the body necessarily gets right back into action the way it did years ago," she said. "We'll see." She also revealed that she and Kazee have decided not to learn the sex of their second child ahead of time.

"You don't race to the end because this is the last time," she shared. "So there's a bit of joy and a little sadness. I'm really trying to enjoy it all and not try to just get through the days."

Though Dewan and Kazee have not yet tied the knot after announcing their engagement in February 2020, she told Us Weekly in 2023 that they have settled on a location. "My family's like, 'When guys, when?'" she said. "We'll get there. I promise, we're getting there."

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