Parents Left Speechless At Ultrasound, This Is What Baby Was Doing In A Belly

Proving you're never too young to be an Internet star, an ultrasound video that shows an unborn baby clapping to a children's song has gone viral.

Mom Jen Cardinal posted the clip on YouTube, writing, "At our 14 week ultrasound our baby was clapping, so I sang a song with our doctor as my husband filmed."

The video shows the fetus clapping seven times as Cardinal and her physician can be heard off-camera singing, "If You're Happy and You Know It."