OMG!Carrie Underwood Shares a Cute Video of Herself Singing With Her Baby Son, Isaiah

Carrie Underwood's son, Isaiah, is only one-year-old, but he may already be following in his famous mom's musical footsteps!

The 33-year-old star recently took to Instagram to share a cuter than cute video of herself singing with her baby boy — and the audio clip of their mother-son duet is nothing short of adorable!

"Audio only… my sweet boy singing his little heart out. This is the most beautiful sound in the world!" Carrie captioned the video.

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The former American Idol winner and her husband, Mike Fisher, 36, married in July 1010 and welcomed Isaiah, their only child, in February 2015.

Click through the gallery below to see more of Hollywood's cutest babies!