it's john's!

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John Legend and Chrissy Teigen are about to expand their family ... and not because they are getting another adorable puppy -- the couple is expecting baby No. 2!

Chrissy announced that she is pregnant with an adorable video on Instagram. And not to worry ... it's John's, as clearly noted by Teigen on social media. Thanks for the clarification. 

In the video -- captioned "It's John's" -- Chrissy is with Luna, and pointing to her belly, she asked her daughter, "Luna, what's in here?" And the one-year-old replied, "Baby."

THE CUTENESS.

John and Chrissy welcomed Luna into the world in April 2016, and earlier this fall, Chrissy had said during an interview with with InStyle that she was hoping to have a second child through frozen embryo transfer, which would happen in the coming months. 

Congratulations to John, Chrissy, and future big sister Luna! 

Chrissy Teigen

Photo: Getty Images