Kelly Clarkson Debuts Her Post-Baby Body Of Work! Listen To Her New Single Heartbeat Song HERE!

It has NOT been so long that Kelly Clarkson forgot how to turn it up!
[ Related: EXCLUSIVE! Kelly Clarkson Left The Britney Spears Concert Early?? ]
She teased her new single Heartbeat Song last week — with a very special, very tiny guest — but the whole thing was worth the wait!
Just like baby River Rose!
Ch-ch-check out the video (above) to hear the new mom getting back to old school Kelly!