It's a girl!

Not only did Rob Dyrdek and his wife Bryiana Dyrdek shock fans when they announced that they were already pregnant with baby No. 2 — but they surprised fans even more when they revealed that they were having a baby girl! The adorable couple found out they were expecting a daughter at an adorable gender reveal party.

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The model shared an adorable video clip from their party, taken at the moment they found out they were having a girl. Bryiana held their nine-month-old son Kodah while the Fantasy Factory star popped a black balloon, and pink confetti revealed that baby Kodah is going to have a little sister.

"Twinkle, twinkle little star.. we spent so much time wondering what you are," the 25-year-old wrote in the caption. "Now that we know Kodah will be a big brother to a little sister, we are over the moon and can't wait to meet you! You are the perfect addition to our family, sweet girl, and we love you so, so much! I can't believe this is real."

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And then there were 4! 😍🤗❤

A post shared by Bryiana Dyrdek (@bryianadyrdek) on

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Bryiana also shared an adorable family photo of her, Rob, and Kodah and even though her baby bump hasn't popped yet, she still acknowledged her baby girl in the caption.

"And then we were [four]," she wrote.

Briyana and Rob, 42, tied the knot in September 2015 and they welcomed their first child together the following year. It looks like they loved being parents so much that they immediately wanted to add to their little family, and Bryiana even gushed over her hubby on his very first Father's Day earlier this month.

"He's never missed a doctor appointment, never missed a baby class, always puts our family first, and shows us every day how much we mean to him," she captioned a shot of him and baby Kodah in matching father-son outfits. " I am so grateful to raise our family with such a wonderful, loving and dedicated man. There is no daddy in the world as perfect as he is. Thank you for everything you do and all that you are."