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Molly Sims dances with joy as she announces baby No. 3 is on the way

/ Source: TODAY

Congratulations are in order for model-actress Molly Sims and her producer husband Scott Stuber. The happy couple is about to get even happier — with the addition of baby No. 3!

"We're so excited," she said in a clip posted to her YouTube channel. "This is happening. This is like our 'hail Mary.'"

Sims surprised fans with the news Tuesday morning, and told them it was a shock to her and Stuber, too.

"We never expected it would happen," she explained. "We didn't even know. This is such a true surprise. I think that's why I'm so emotional."

RELATED: Molly Sims' advice to other moms: 'Get out of your yoga pants'

Sims' voice cracked as she dabbed at tears and rubbed her belly.

"We can't wait to meet you," she said, glancing down at her baby bump.

But they have to wait, so Sims has promised to pass the time with videos and journal entries documenting each step of the way for her fans.

RELATED: It's a girl! Molly Sims welcomes second child, Scarlett May

While she didn't reveal her due date, she did add, "He or she will be here before we know it."

We're sure the whole family — including son Brooks (4) and daughter Scarlett (1) — are just as excited as mom, who ended the clip with a gleeful motion she called her "happy Baby Stuber dance."

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