Pregnant Spy Kids star Alexa PenaVega has officially popped!

In an adorable video with husband Carlos PenaVega, the 27-year-old gave fans a pregnancy update on her vlog by baring her baby bump poolside.

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"Can't believe she's already at 21 weeks!!! Ahhhh!!," the Big Time Rush singer and dad-to-be captioned the clip on Instagram. "This baby is growing!!!"

This will be the first child for the couple, who announced they were expecting earlier this summer.

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"I cannot believe I finally get to say this… WE'RE PREGNANT!!!" the actress wrote alongside a picture of a positive pregnancy test. "It’s #ClearblueConfirmed that a little blessing is joining the PenaVega family!!! We can't wait!!!"

To see where the rest of the cast of Spy Kids is today, check out the gallery below!